Closing chapters

It's a little past 7am here in Tokyo. I'm in the office and have managed perhaps 2 hours sleep, so I'm feeling a little weary but the early morning light is filling the room and I'm not going to manage any more. I must point out that my current situation is completely down to my own frugal state. The university funded me for a generous number of days and simply because of possible flight times I had a few days over at the end. I try and avoid talking money on the blog but the idea of spending almost a week's wages on a night in a cheap hotel doesn't appeal very much - I'd much rather spend the money on good food; just my personal set of priorities in life.

Today is my last full day in Japan and depending on how I'm feeling in a little bit I may do some more exploring, though there aren't many major tourist sites left to see. Yesterday I took a morning walk around the Shinjuku area which is home to many government buildings along with plenty of shopping and the red-light district. The architecture is a mixture of very stereotypical modern Japanese high-rise with some great little alley-ways filled with noodle bars and run by the local Yakuza (The area I've been staying, Ikebukuro, is also one of the largest Yakuza areas). So, a few of snaps from Shinjuku:


A good tip is to skip going up the Tokyo tower, which is expensive and head to the Metropolitan Government Offices which also has a great viewing area and is free.



(The photo which looks like it's been taken with a fish-eye is a panorama of three shots tied together using ArcSoft Panorama Maker which I found online yesterday).

After some lunch in one of the local soba restaurants I hopped to the other side of the city with a couple of students from the department to go to the Museum of Contemporary Art in Tokyo (MOT). The museum is an exciting and well designed space with very good lighting, showing some of the best of modern Japanese art. Currently the temporary exhibits are also excellent with a collection depicting the idea of the individual in today's digitised society, and an amazing collection of work by Hiroshi Nakamura. I wish I could find more online to link to but have had little luck.

Sayaka Akiyama records her journeys in a scrap/map format on homemade paper, fabric and any other materials which are relevant to her particular travels (be it within a single building or a more distance trip). She has a series of perhaps 20 or 30 maps created from her time in Barrow-in-Furness in 2004. I find it hard to believe that Akiyama hasn't been heavily influenced by Peter Greenaway's short film A Walk Through H: The Reincarnation of an Ornithologist which is filmed almost in its entirety as a voiceover describing the mysterious journey of Tulse Luper showing a series of maps through H. This is a rather hypnotic film and the DVD of Peter Greenaway's early short films are intriguing if not always fully comprehensible.

Among the other interesting works at the gallery I would advise looking out for Daisuke Nakayama who has some haunting and rather pessimistic views of the digital age and Yuri Shibata whose "Material Color works involve the harvesting of some natural material (hair, kudzu, etc.) to be ground into pigments and made into paint. The resulting paintings are both of and by their subjects. One cannot conceive of a more completely representational art form". Sounds cliched but the work is actually rather fine.

In comparison the Chinese contemporary art scene often feels less polished but consequently more visceral than the Japanese scene which has been growing pretty steadily since the 1940s. The Japanese work seemed knowingly clever whereas the work in Beijing feels more reactionary, which is no surprise.

I've recently discovered artWALK Beijing which looks like a great resource and I'll be going to the next meet-up if at all possible.

I'm really looking forward to getting back to Beijing now, though I've had a great time out here. I have three or four projects to work on and really want to push them forward quickly. This whole trip has been immensely valuable, from the serenity of Kyoto to the frenetic but stimulating atmosphere in Tokyo, both of which have been useful for my work in different ways. When I get back I'll have to prepare some lectures for an upcoming workshop to introduce AdS/QCD which will be more detailed than my previous seminars. I also have a friend/collaborator turning up in a few days and several friends and family booked up to head out. It don't stop!

Translation invariance

I'm in a minor pickle right now but will get onto that shortly.

It looked like I was going to miss the cherry blossom in Japan for the second time this year but the TV news informed us that just outside the government buildings near the Imperial Palace a few trees had blossomed early. Most of the trees around the city are predicted to be in full bloom by Monday, by which time I will have left but I'm delighted to have been able to take a visit to the early-starters. These photos were taken yesterday when I went with a couple of students and one of the professors from the department.



Officially I'm now free to go see the city but there is some work I would like to finish soon and am now back in the department. On top of this I am, as I mentioned above, in a minor pickle.

I Couchsurfed last night at the flat of a student from Tokyo university. I hadn't expected to stay up till late chatting about emergent phenomena, Boltzmann brains and Milliavin calculus, but my host happens to not only be doing research into complex systems in biological processes but also has a strong mathematics research background and seems to be up on just about any subject I bought up and frequently knew a lot more about it than I did. Pretty impressive, especially for an undergraduate!

Anyway, it was my fault but I had misconstrued the e-mails we'd exchanged and expected to stay for four nights. Looking at them again it was reasonably clear what the deal was, so now I'm without somewhere to stay tonight or indeed until Sunday, when I fly back. I'm going to do a quick Couchsurf call and see if I can find somewhere in the next 12 hours or so. Forking out for a hotel is not really a last resort.

So, that's where we are I think, it's going to be a bit of a frantic day so I'd better get about my business.

Oh, before I forget, there was a small earthquake last night, my first in Japan and a pretty strange experience. Very different from the small tremors I've felt in England and China. I'll mention it when I'm not so homeless.

Culinary dilemmas

I've been pondering about how to write this post for a few days now, but I'll just start and see where it goes.

I had been surprised when I arrived in Japan to see how many sushi restaurants served whale. I spoke to several people about this subject and certainly had no intention of having any myself. In fact I even shied away from the horse meat sushi, though that was more to appease a friend than from my views on equine dining.

Those I spoke to had positive memories of eating whale meat at school, mostly because the high fat, high protein content makes it a very powerful source of energy and nutrition. I did a little scouting around on the internet to read more on the subject, to find out the current state of affairs and to try and understand some more of the moral implications. As in any hotly debated topic there is strongly worded rhetoric on both sides. I certainly find the claim of killing 500 or so whales a year for scientific research a poor excuse, though if you're going to kill them, better not to let them go to waste. However, the idea of making money from the trade certainly muddies this argument.

The latest hunting methods, when they are implemented, at least finish the job faster than the traditional techniques. The grenade spears can still lead to a pretty unpleasant death. It seems that the cost of this method is somewhat too high and sometimes the scientific research crews need to cut some corners - frankly that's completely unacceptable from any scientific standpoint.

The question of how intelligent a whale may be and how much of an issue this is is something that I haven't got to the bottom of but whatever the levels of thought process it all seems like unnecessary cruelty. Unfortunately I feel that the majority of farming involves unnecessary cruelty and I buy free range whenever possible (almost always in the UK). I don't remember the last time I bought chicken or eggs which were not free range (This does not include shopping in China!). Paying a little extra helps to ease the conscience but I'm not convinced that the non free-range is always great either.

Anyway, I read enough to know that I wasn't going to be ordering whale meat any time soon. Unfortunately sometimes life isn't that simple. On Friday evening I went to a sushi restaurant with a student from the university and sat down to peruse the menu. An elderly Japanese gentleman in a finely tailored suit, a gray trilby and sporting a most preposterous handlebar moustache started talking to us. He had a smattering of English but most of the time my friend translated admirably. We exchanged the usual pleasantries and I mentioned that I was planning to go to Tsukiji the following morning. Aha, he said, he knew just the person for me and got out his mobile to call a woman he knew who worked at the market, she was to be my tour guide. Unfortunately she was busy but I greatly appreciated the offer of assistance.

He then asked if I liked sushi, I nodded energetically and at this point he started telling me that I must try, something. He kept repeating something, something bacon but I couldn't make it out. I looked at my friend and as I did so he called the waiter over, said a few words to him and pointed at me, smiling wide-eyed. At this point he remembered the English and repeated whale bacon, whale bacon. When it dawned on me what he was saying my heart sank, I turned to my friend and gave a worried look. "Whale meat? Really? I really didn't want to try that.". I'm sure it's OK, my friend said, thinking I was worried about the taste. I responded that I was not happy with the culling of whales to which I got the scientific research response. I told her that I didn't believe that that was a valid reason but by this point the piece of whale was being sliced in front of me.

I asked if I turned it down whether this would be very insulting, but the answer was pretty obvious. Perhaps turning it down would make a statement but my reasoning at the time was that it would simply indicate how ungrateful and ignorant foreigners were. So, there it was, sitting in front of me, four thin slices of whale bacon and four thin slices of whale fat, on a bed of dressed lettuce. The trilbied gentleman, Cheshire cat-like at my side. So, I gave in, I ate it, it was OK, but marred by the feelings of guilt as I did so.

OK, I'll admit something I wasn't going to admit, I was thinking more: what would other people think about me doing this, than that some whale had been slaughtered for this. The whale was already dead and I had no thoughts of it being my fault - that's the truth.

and it's been playing on my mind since - not that I did a bad thing, but what the right thing to do was. I guess the point is that my feelings about whaling are not much stronger than my feelings about intensive farming methods. As I said above I think that both involve unnecessary cruelty and the latter involves a huge number of animals, while the former a small number but has a large environmental impact. If I was as bothered as I should be I would probably not eat any meat in China, but I do.

The decision was not 'shall I kill a whale or not?' but 'is it worth me insulting those around me and embarrassing myself to make a point?'. Well, the answer is above and given the same choice I'd probably make the same decision again, but I would certainly never order it myself and would try and talk a friend out of ordering it if they were planning to. By the time I'd finished the plate, the gentleman in gray had vanished, his grin still lingering at my side.

I'm interested to hear what other people think and whether they would do the same thing. I've been reading around more on the subject and the surety with which both sides state their cases doesn't draw me to either side, though I state again that I am against the practice. There are some interesting articles linked to below:

The British Commissioner to the International Whaling Commission has some discourse on humane killing standards here which includes the statements that:

We accept that it is not easy to define exactly what constitutes humane killing. The aim must, as with the slaughter of terrestrial animals, be to render a whale immediately insensible to pain, and for its subsequent death to occur without avoidable pain, stress, or suffering. It is accepted that this is unlikely to be achievable in 100% of cases, but we would not wish to define as acceptable anything that falls short of this standard. We are, moreover, firmly of the view that current whale killing standards, with, at the most, some 60 % of whales killed instantaneously, is not acceptable.

From this definition I can't see that whaling could ever fall within these standards unless the grenade tipped harpoons were made unfeasibly large.

and from the same source comes this discussion on the ethics of whale hunting. Some good points here but I think that the ideas that:

# Man has no right whatsoever to harvest whales, in other words, that whales have an absolute right to live
# It is unethical to violate other people's feelings by killing their symbols - whales have become an important symbol for the environmental and animal protection movements in the western world.

are too general to apply to such a discussion. The first four points in the article are much stronger, in my opinion.

Some comments from Greenpeace here include the interesting remarks that:

Japan claims it only hunts whales for 'scientific' reasons. Yet the body for which the "research" is being done, the International Whaling Commission (IWC), does not need the data, and has called for the programme to be ended.

I haven't noticed this claim stated so strongly anywhere else and indeed in this in depth article from the International Whaling Commision which discusses the decision making process in giving permission to hunt whales for scientific purposes there is both information to the contrary to the above view as well as some in agreement. The IWC states that main points to be taken into account when granting scientific permits are:

1. whether the permit adequately specifies its aims, methodology and the samples to be taken;
2. whether the research is essential for rational management, the work of the Scientific Committee or other critically important research needs;
3. whether the methodology and sample size are likely to provide reliable answers to the questions being asked;
4. whether the questions can be answered using non-lethal research methods;
5. whether the catches will have an adverse effect on the stock;
6. whether there is the potential for scientists from other nations to join the research programme.


It seems that of the four Japanese whaling programmes there are some positive research outcomes but there are also major question marks over certain important details, for instance (for one of the programmes):

In the discussion of these permits in the Commission, an additional factor raised is that the catches take place within the Southern Ocean Sanctuary declared by the IWC in 1994 (to which Japan lodged an objection with respect to minke whales). If a Sanctuary is in place, it can be argued that information on improving management of whaling in that region is unnecessary. Each year, the Commission has (by majority vote) passed a Resolution urging Japan not to issue a permit for these catches.

There are also a couple of interesting articles from Retrospectacle here, and here with a good dose of vocal opinion in the comments.

Well, I hadn't planned to go into quite so much detail but there's a lot of information out there.

Sensory saturation

I didn't manage the 5.30 start for the tuna auction, though it transpires that tourists can no longer view this early morning spectacle. The likelihood of me blagging my way in as a Japanese tuna salesman was minimal, so I decided against that plan. I was however out of the hotel before 7 and at the market in good time. Tsukiji market is the largest seafood market in the world and I recommend it as a must see for any food lovers, or for those simply interested in seeing this incredible spectacle. The market is on reclaimed land in Tokyo harbour and sees around 2 million kilos of fish pass through its doors every day.

The 900 or so wholesale dealerships are packed close together with just enough room to walk through the rows and enough space for speedy little trucks to dash through the columns, transporting large pallets of marine produce. After you've been struck by the efficient hustle and bustle, the people slicing frozen bodies of tuna with bandsaws and the incredible colours of fish around you, the smell, or near lack of seems quite remarkable. The fish is all so fresh that the only odour in the whole place is sweet and the similarity with what you'd call a fishy smell is almost non-existent.

I spent a good hour walking around the stalls, taking photos and marveling at the quantity and quality of what was around me. Rather than posting them all here individually I've linked to this Flickr set on the slideshow below. It really is an incredible place and certainly worth the early start.

Flash Slideshow

However, the real treat is the fact that the restaurants dotted around the market receive the fish fresh each morning and serve what is simply the best sushi and sashimi in Tokyo, and therefore almost certainly the world. A sushi breakfast of the chef's recommended catches that day is not cheap - for me it set me back about two day's wages (total of 15 quid or a little under 30 dollars). However, to buy food of this quality anywhere else in Japan would be completely extortionate. Sushi for breakfast isn't my usual choice but walking round the market got my appetite into overdrive. The combination of ten pieces of sushi with a stunning fish soup were truly spectacular and, a day later I can still remember their flavours very distinctively; sweetness being the over-riding taste.

I sat and watched for a while after finishing this amazing meal as the chefs prepared breakfast for the other highly appreciative customers. It's a lot of fun to watch though I have to admit I don't really understand what the years of training perfect - perhaps that's the idea: they're so good that it just looks easy. (Incidentally, I have a sushi moral drama to explain/admit at some point soon.)

Anyway, leaving the restaurant I wandered the other shops surrounding the market which sell vegetables fresh from the market (which deals in flowers, fruit and vegetables as well as fish) and the stalls selling cooking equipment. I was extremely close to buying a knife and a whetstone but sadly they're just too expensive for now.

Walking around somewhat aimlessly, only vaguely attempting to find a metro station I found myself outside the Kabuki-za theatre and couldn't help but ask about the timing and prices for the day. Last year the only option was to see a full show which can take up a good few hours of the day and though I would have loved to do that again, economics once more won out. However, they now offer tickets for a single act of a play for a very reasonable price and so I went for this option. Sadly you cannot take videos or photos inside the performances but I've tracked down a couple of short clips on youtube. Kabuki is perhaps the most accessible of the classic forms of Japanese theatre with the costumes and movements being both exaggerated and beautiful. I find the music a lot more pleasant and often haunting than Beijing opera, which is also very beautiful visually but, for me, prohibitively cacophonous. These first two videos are of onnegata, the female characters played by male actors, which are some of the most incredible players in the troupe. See here, here and here where the shouts you hear are kakegoe from the audience showing their appreciation for the actors. The voice-over is very similar to that which you hear in your earpiece as you watch the performances live and, for me, is completely invaluable.

There are many different style of acting, which can be found within a single performance and the videos I've found show only a very limited number of techniques. Clearly seeing it for real is far more spectacular than seeing it on Youtube and a full day performance ranges from around £15 to around £80.

So, after a very enjoyable first scene from Yoshitsune Senbon Zakura I headed further North to Akihabara, the electronics district, hoping to be bowled over by the high-tech gadgets on display. Unfortunately, this gave me one of my first disappointments from Japan (not bad in two months). This area is the main retail district for computers, cameras, TVs and the like but though there's plenty of gaudy advertising, this is really a minitropolis of small shops packed with electronics, just as you would find in most modern cities. This is not the area where Sony, Phillips and Nikon show off their latest wears, this is simply for consumers, not for people wanting to play with the latest tech gadgets - I get the impression that Shinjuku is probably the area for more gadgedty tech displays.

I grabbed a quick walking lunch of Takoyaki and started strolling. It was a stunning, sunny day and I had nowhere in particular I needed to go so I started walking in roughly the direction of my hotel, the other side of the city. Five hours later I arrived back home, pretty exhausted but having taken in perhaps 15 km of the city including circling around the Imperial palace and seeing the blossom (though not cherry) that's in bloom at the moment:

seeing the interesting architecture around Nihon University:


passing by some in-city fishing.

and a lot more besides. (Each photo can be enlarged on the Flickr site).

Powered only by high quality fish I left myself completely exhausted by the end of the day. Taking the underground gives such a blinkered view of a city and spending a few hours getting thoroughly lost in areas that you weren't expecting to end up can be a wonderful way to see a good deal of the city. I advise getting lost whenever you have the liberty to do so, I tend to stick to this rule fairly religiously whether I want to or not. More of the pictures from the day can be found here.

Today, Sunday my mind is feeling refreshed enough to battle on with some problems I'm working on and hopefully a little more progress will be made in the few days I have left at Ochanomizu. Two months has flown by and though I'm having a great time here, it will be nice to get back home to Beijing.

Half empty

A two hour seminar yesterday has left me pretty tired. I hope that I will be able to lecture at some point in the future, though I don't know how people manage it day in, day out. I enjoy it a great deal but it knackers me out no end. It's also great to have an audience who wants to work on the topic I'm talking about and has lots of interested questions.

I have lots of things I'd planned to talk about but I've got one paragraph in and am flailing about listlessly on the keyboard. It's been a good week and with just three days left in the department I think that I will be finished off concentration-wise by then. I'll have a couple of days break before diving back into Beijing life though I can't see a proper break being imminent. The Spring Festival has been and gone so I think that the next holiday probably comes some time around August. Deep intake of breath! Having been on the go, non-stop every day for this long is beginning to take its toll.

All being well I'm off to Tsujiki fish market tomorrow - the biggest fish market in the world and the source of the best sushi, though everything kicks off at 5.30 am, which may be a bit of a struggle.

Nope, a failed post I'm afraid but I currently can't even bring myself to delete it, so I'll simply link to a couple of interesting articles which have come up over the last couple of weeks:

Robots teaching themselves to walk, from the BBC, and a very nice explanation from Scott Aaronson on the Shor algorthm, for factoring large numbers on a quantum computer - a subject I studied and enjoyed a great deal as an undergrad.

Dayglow

I'm at the last leg of my Japan trip, now at Ochanomizu University to discuss some work they're pursuing here. Kyoto was a wonderfully peaceful city and I got more done there than I have done in a long time and Tokyo is also proving useful, if not peaceful. The fact that it's been non-stop now since I spent two weeks being pretty unwell in Korea means that I'm reaching my limit and my level of concentration is slipping. I'll be giving my last talk out here on Thursday and I'll be talking AdS/QCD - that will be three different (though similar) talks to three somewhat different audiences in two weeks. Comparatively not that many but I'll be pleased to have them all wrapped up.

Currently the students are slowly returning to the department here having spent the last week at the Japan winter school in Hokkaido studying string field theory, with the likes of Zwiebach and Kazakov amongst others. They seem to come back filled with enthusiasm, which is great to see. Hokkaido, the Northernmost island of Japan is really a winter resort where there are both hot springs and great skiing from what I hear. They also have there own regional cuisine which consists of high quality seafoods in rich stock - great for the winter!

There are too many things to finish to write anything extensive at the moment but I wanted to post a picture which I remember seeing in a book of astrophotography at school and wanted to share it.

From NASA and the NSSDC and produced with ESA's Faint Object Camera (FOC) on the Hubble Space Telescope. This was certainly the first and, as far as I'm aware, the only direct observation of the surface of a star, other than the sun. For the pinpricks in the sky to suddenly become real, tangible objects was quite a revelation for me. Betelgeuse is a huge star (probably around 300 million times greater volume than the sun), nearing the end of its life. The extra hot regions on the surface are more easily visible in infrared. The star will at some point in the not too distant future (astronomically speaking) explode as a supernova, sending off its outer layers to form a nebula. When it does explode it will probably be a similar magnitude to a crescent moon and will be clearly visible in the day, just as the crab nebula was 1000 years back. Anyway, just wanted to share that.

Another couple of spectacular photos (and here) from the Cloud Appreciation Society. I guess there may have been some HDR play going on but they're still pretty eerie.

Anyway, enough procrastinating, I have calculations which need finishing off. So much to write about, so little time!

Taking it easy

I have discovered to my cost the extreme generosity of Japanese businessmen. This post will be a somewhat labour intensive task for my now slightly dazed brain cells.

After going for a meal with the department on Friday evening, post-talk I made my way to my Couchsurfing host's flat. Couchsurfing is a fantastic scheme and is built in large part on trust. I met up with Chi on Thursday evening for a bite to eat and a trip to a Gifu bar where we chatted and she made sure that I was a reasonably trustworthy sort. Having passed the test I futonsurfed for Friday and Saturday night. Not only is CS a great way to get free accommodation all around the world (almost 200,000 members now) but it's the perfect source for useful local information.

Gifu snacks of Natto and egg:

Last time I visited Tokyo I spent most of my time looking at traditional Tokyo, the temples, and the Kabuki-za amongst many other things, so this time I've decided to see some more of the modern city. On Saturday we headed to the West, to Shibuya, Harakuju and Shinjuku, to see the famed fashionable areas which have a good mix of both big name brands plastered all over the buildings in neon and very alternative, counterculture shops if you get off the main streets.

Shopping is big here and some of the shops (mostly the 'underground' shops) are so popular that there are queues just to enter. People wait in line outside sipping on McDonald's milkshakes waiting to get into their favourite place to buy the weird and wonderful.

This area is famed for the huge crossroads where the people flow like ants across the street in a huge wave of bodies and then, just as suddenly it stops and the traffic resumes. It's a strange sight to see so many people synchronised like this. Interspersed between the shops are many little galleries for art, hand-made jewelery and clothes. My host makes bags made form vintage kimono fabric (I'm quite happy to advertise these as they are really very good indeed, they would make superb presents. The prices look high but many of the fabrics used are over 100 years old). We popped into a few places selling whole kimonos and pieces of old fabric, some of which are hugely expensive, just for a small patch of design. A paradise for anyone wanting to make their own clothes.
The Omotesando shopping complex:

The design Festa art space:

contrasting with the Audi building:

The main attraction of coming to this area (if you're not much of a shopper, like myself) is to simply people watch. Dressing up is big here, and I don't mean simply taking care of your appearance. There are several very distinct styles readily apparent as you walk around the streets here. This is most visible with the women, but some of the men fit into distinct categories of counterculture.

The shopping area is mostly noted for the gyarus. Girls with a dark artificial tan, towering heels and bleached or coloured hair. On the way to Yoyoji park we passed a group of gyarus practicing their dance moves in the street, possibly ready for a competition. You can't see here but usually they have white makeup around their eyes giving them a startled panda look.

Regular gyarus are perhaps the most un-extreme of all the subcultures, though the ganguros are more to the panda end of the spectrum.

A lot of the styles are derived from Manga and the Harajuku bridge is mostly populated with cosplayers who dress in clothes to look like Manga characters. Unfortunately it seems that they take the day off on Saturday, so I didn't see so many of them and got fewer photos. However, Flickr has lots of images of some of the interesting costumes and makeup which go on display on the bridge. Some of the most startling cosplayers I've seen are: The blue bride, Tatsurou, Ninja, and these girls in black.

It seems that some of the locals are not cosplayers but simply like to come and dress up in their own style. Also available on the bridge are free hugs, though there didn't seem to be many takers.

Near Harajuku is Yoyogi park where there was some Samba going on which we sat and watched having been on our feet for a few hours. I'm told that the woman on the right is a famous actress, but I haven't pinned down a name yet.


After dinner (number 1) in a conveyor belt sushi restaurant we headed to the East side of the city where Chi works in a bar. I wandered off and had a look around the local temples, which were closed by that time but the grounds were open and wonderfully quiet after the hectic crowds in the West.

I headed back to the bar, expecting to have a quick drink before going back to the flat and at this point the trouble started. It was a small bar and there were a few businessmen in, each with a bottle of shochu in front of them, gradually being consumed with green tea. It didn't take long to start talking with them. First there was a test of my Chinese character skills to see if I could read their names in Kanji, then there was the explanation of what I'm doing in Japan which resulted in a short explanation of electrons in metals and the electrician in the group literally jumping up and down with excitement as his job suddenly, apparently became clear (this has more to do with shochu than my skills at explaining atomic bonds). I was sitting happily chatting with, um, everyone in the bar, nursing my one pint that I felt I could afford and trying to keep four conversations going at once when the first drink arrived in front of me from the ship salesman to my side.

Unfortunately it seemed that if one of them was going to buy me a drink, the others would look bad if they didn't join in and so, inevitably I got through a fair number of the consumables in the bar, including several plates of the not inconsiderably portioned snack-food - mostly of the raw meat variety.

At one point I was being asked about my thoughts on Japanese life and culture and I mentioned mono no aware, which I know of only from reading about Japanese cinema. The bar became hushed, everyone looked at each other, rather confused and then shouts and cheers as I realised I'd pushed just the right button. I guess that the knowledge of this concept was enough to get me into 'the club' and the generosity only increased from this point on.

Somehow 1 o'clock rolled around, I was still relatively stable and had acquired a rather nice leather passport holder at some point. I was asked if I liked Korean food , I confirmed and we headed to dinner (number 2) a little way down the street. Dish after dish piled up as we got through a huge Korean barbecue. I'm pretty sure that conversation, though still extremely enthusiastic, had diminished in its fluency and for some reason French and Chinese dominated linguistically on and off.

Leaving the restaurant there were five of us, though we quickly lost one who fell asleep on the pavement. The fact that one of them had just bought me a very nice dinner left the other one looking bad, so a Japanese dinner was then offered. In another favourite restaurant of theirs, dinner number 3 arrived in the form of a large plate of sushi. I was truly stuffed but to turn this down would have been very insulting. It was great sushi but I probably didn't appreciate it as much as I should have!

Anyway, by 4 am after three dinners the others seemed to have forgotten how to get home if not which way was up. The group dispersed and I have to presume that the others made it back intact.

Sunday was not a lot of fun. Taking my luggage on the Tokyo underground with a stonking hangover and a belly fit to burst was not a pleasant experience. After a good sleep and a bite to eat I was a good 30% on my way to recovery and today (this post has taken a day to write) I'm 95% back to 'normal'.

Tokyo story

I haven't been able to post for a few days, partly because I've been too busy, but mostly　because Blogger blocked this site using its clever spam-prevention tool. Apparently my blog has all the hallmarks of being written by a spamming robot - not impressed.

This has to be a quick post but I wanted to update on my current whereabouts.　In fact my exact whereabouts are in the flat in which I've just couchsurfed, but more of that soon.

On Wednesday I lugged my now considerable quantity of luggage (including whiskey, wine, many books and a fishing rod - don't ask) on the shinkansen to head to Tokyo. The Shinkansen is a joy to ride, covering the 500 km in about two and a half hours. The journey was smooth and almost silent, save for an orchestral man sitting, sleeping two seats away.

So, I'm now at Tokyo University which has a rather beautiful campus here at Hongo, not far from Tokyo central station. I'm meeting with Professor Imamura to discuss some work I've been doing and will be presenting a talk tomorrow (Friday). The string theory group here is large and experienced and so my talk has to be adjusted from the seminar I've been giving for the last few months (not that I haven't been talking to experienced groups, but that the ratio of string theorists to non-string theorists is much higher here). I gave this talk on Monday in Kyoto and got a lot of good questions and I expect more tomorrow. Should be fun.

I'll try and post some more over the next couple of days but things are busy.

For now, here are a couple of photos from the train. Fuji was as stunning as last time I saw it, a year ago, but this time covered in a layer of cloud.

And the food on the train is somewhat better than that found at most British stations. There's a great deal to be learnt from the service industry in Japan.


OK, more to post soon, including the weekly world-in-blogs summary. Though I'm staying in a flat in Kiba at the moment I will be moving to Ochanomizu University on Sunday for a week or so and should be able to catch up a little on Sunday evening.

On video lecture resources

Spurred on by An American Physics Student in England (who writes much more eloquently on the subject than I will) and Asymptotia's follow up I've been spending a couple of hours each evening back at the guest house winding down with videos of theory seminars from various graduate summer programs - With a Chinese budget, going out on the town is not on the cards, though I've spent a few pleasant evenings in local cafes. Anyway, I thought I'd talk about these video lectures in general and try and add to the original voice and push to make this more widespread.

Learning theoretical physics is hard - it takes time and effort in equally large helpings. There's so much of it that it's easy to be distracted by a million questions and one could spend years following leads from one confusing point to another. It's clearly very complicated though with practice and time the confusion clears and the mass of formulae converge into a meaningful whole. Sometimes books and people explain things in such different ways that it's hard to see that they're talking about the same thing. Often this can be beneficial however because you build a more structured picture of the given subject - physics for cubists perhaps.

Before I say anything about sitting back and watching videos I should stress that the only way you will learn to use the tools of quantum field theory, string theory, advanced areas of mathematics and the like or indeed far simpler topics in maths and physics is not just to read the hundreds of books on the subjects but to do it.

Many people claim that they don't give advice. This is all very humble but those with experience have been through the system and seen what pitfalls lie in wait. I am keen to hear advice from anyone who has been there and done it, however subjective it may be.

Though I'm not that far from being a graduate myself I think that my memories are fresh enough to provide my tuppence worth on the subject.

I think that the following is one of the most important points to stress to first year graduate students: Now is perhaps the only time that you will have the luxury to be able to sit down and go through all the problems in a book. Do it! Do every problem you can get your hands on. Don't just look at the problems and think if you can do them (though of course thinking about problems abstractly is a useful skill) but write out the indices, dot your alphas and make sure your factors of two are right. This will be obvious to most I'm sure but it's so easy to fall into lazy habits of simply reading books in a comfy chair with a cup of coffee. My opinion is that daydreaming is also an integral part of consolidating understanding in these subjects but in general it won't solve the nitty gritty of calculations.

In my first year I tried to take this approach of going through problems but probably not in a very organised way. I had pieces of paper flying all over the place and ideally I should have ended up with neat notebooks full of the correct solutions which I could easily look back on if I need to do a similar problem in the future.

After this, when you start doing research you (or at least I) won't have time to devote to spending several months going through a book. Currently I do spend a lot of time reading papers and books on various subjects but this is often piecemeal and is on top of pursuing research problems. I usually have to devote evenings and weekends to the former and it's frequently interrupted by the latter.

So, do it, speak to people who've been there and find out what books they found useful and go from beginning to end. If it's an appropriate book you will learn how to solve real research problems for yourself. If you don't do the problems and work through the examples then you will probably be able to sit through a seminar on the subject and know what's going on but you wouldn't have been able to get there yourself.

OK, that said lectures are vital because they give the interaction between student and expert. It means you can follow the thought patterns of someone in the trade and you can ask the questions you can't pose to a book, this is pretty obvious. On top of this if the lecturer is good they will take you at an appropriate pace through a subject. As all good books on learning techniques will stress, stimulating different areas of the brain during learning is a good way to memorize things and so using both the auditory as well as visual inputs will surely be beneficial. I wonder if because our brains have evolved since the advent of language if we're better at learning through speech than through the relatively recent addition of the written word.

Still useful but without the benefit of interaction is to watch the lectures on video which is what I've been doing for a couple of hours each evening. I probably haven't learnt how to solve any of my research problems from them but they've taught me new ways to see things and given me motivation to go and look stuff up in books. Institutes are slowly but surely videoing lectures and making them available to the public. I would urge all institutes to do this. It's a waste not to. There are some wonderful lecturers out there and for something that costs so little, so many people could benefit. This is a treasure trove of resources waiting to be utilised.

As an addition I would hope that at some time there can be a real central repository rather than hundreds of sites dotted round the place with small catalogues of lectures. Spires has a search function for videos but they're not all there. Perhaps it would be possible to include a comment or voting section. I'm sure there are hundreds of courses around the world on QFT but if through time people gravitate towards a particular set of lecturers that's even better for newcomers who don't want to search through all the others.

The lectures I've been watching have mostly been of a relatively basic level but I've learnt things from each one and spent a long time following up leads on the web and in the Yukawa Institute library. If nothing else it's a great chance to sit back at leisure and contrast what makes a good and bad lecturer (though almost all of them have been great) and get a few tips.

Most of the lectures from the ASTI summer school are excellent, ranging from true pop-science level to some reasonably technical first year graduate material. Don't be put off by the fact that occasionally the audio and visual get out of synch, this simply adds to the different ways your brain is having to function and makes the learning experience richer ;-). Lectures from Tony Zee on beginner's QFT, Clifford Johnson on strings and branes, Jeff Murugan on solitons (great but the synch is testing), James Gates on supersymmetry, Don Marolf on black holes and Robert de Mello Koch on the fundamentals of group theory are particularly recommended, though there are many that I still haven't seen. (See below for some hints on downloading these).

The lectures from the PITP school aren't quite so clear but there's still a great range of courses (mostly four lectures each) from the basics of string theory by Richard Szabo and the AdS/CFT correspondence by Mark Van Raamsdonk to slightly more technical lectures by Leonard Susskind on de Sitter space (really not very clear visuals at all).

From the Perimeter institute is another fantastic resource though unfortunately I've not found a way to download them (only viewable as far as I can tell in Internet Explorer). The summer school on strings, gravity and cosmology has extensive introductory lectures.

Serkan Cabi has a long list of pages with videos online and I've spent a long time searching through for the most appropriate. Many of them are streaming but if you want to download them there are programs out there that allow you to do this. In particular I've been using a program called Hidownload which is free for something like two months. For the ASTI lectures the link seemed to break easily and I found a program called DAP which allows resumption of downloads meant that I could go away and over a long time the lectures would end up in one piece on my computer.

Anyway, I hope that's of use. In particular if anyone has the knowhow, energy or power to get a real central repository or search engine which enables comments I think it would be very beneficial. Bottom line - don't waste lectures. Make them as freely available as possible.