brain and time

how does the brain keep time and identify periodicities -- especially with respect to music/beats etc?

also whats the finest resolution of time that the brain can keep track of -- second/millisecond?

update: well there seems to be a whole line of research on this topic http://ticktockbraintalk.blogspot.com/

random: swiss army laptop backpacks

i have been recently amazed by the sudden apperance of swiss army laptop backpacks (well there is the possibility of a confirmation bias here .. but lets set that aside for now). too many people seem to have the same brand of backpack.

i figured there must have been some kind of promotion or sale forcing such a monoculture but couldnt find anything of note. a little bit of inquiry revealed that the bags were on sale at sams club (www.samsclub.com/shopping/navigate. do?dest=5&item=361436&pCatg=5791 ) and were a good deal.

for the record, i think the backpack looks good.

brilliant ..

"Fewer than one in forty Biharis possesses a television. For entertainment, many rely on Lalu .."

-- In spite of the gods, Edward Luce

google checkout - bug?

google checkout consistently gives out 10$ off for anyone signing up for a new google checkout account -- the cost of creating a new account is trivial. and as far as i can see there is no conscious effort to correlate credit card numbers or address information to prevent the obvious cheat of creating bogus identities to get 10$ off each time?

am i missing something

(only flip side is by signing up multiple accounts, u run the potential risk of compromising the private information more often if the account gets cracked)