Today I mathematically proved something that has long been suspected, but never confirmed in such a rigorous way. I was working on my Models of the Neuron homework, and after three or four intense lines of arithmetic, I got back to the equation I started with. What did this prove? Well, I was feeling pretty tired today, as I probably needed about another hour of sleep, but I had a ton of espresso from our magic and convenient little X6. Despite the coffee, and probably due to the lack of sleep, I got absolutely nowhere (fast!) with my arithmetic. Thus, I proved that coffee is not an adequate substitute for sleep. QE-effin'-D. Please, please, try to stifle the groaning. Anyway, this brings me 'round to another thing I thought of. I have a favorite, rather bad science joke. I certainly didn't make it up, but I should have. It goes like this: Werner Heisenberg was speeding down the road one day in a little two-seater Mercedes when he was pulled over by a police officer. The officer walked up to the car and looked down at Heisenberg, "Do you know how fast you were going?" "No," said Heisenberg wryly, "but I know exactly where I am!" Do you have any cheesy science jokes?