I know it's a style atrocity to wear sandals with a suit, but if one is geek enough to do it, then these are probably the best ones.
I have to say that tipping policy here is a nightmare. The Indian staff appear receptive to tips, while the Asians refuse with a kind of quiet, insistent dignity which actually makes you feel you insulted them by offering (as just happened when my tuna sandwiches arrived lunchtime).
I felt quite bad as I munched through the meal, but compensated by spreading ketchup liberally all over my fries.
Note 1: Despite yesterday's warnings, the water was never in fact turned off.
Note 2: Excellent physics reference site by Gerard 't Hooft here.