I managed to ruin my keyboard yesterday by spilling water on it. Fortunately, most of the keys now work (whereas yesterday most of the keys didn’t do anything), but a few don’t work at all, and a few keys don’t do what they are supposed to do. Hopefully I will be able to get a new keyboard tomorrow since typing on this one is quite annoying.
and I gave a presentation today on the pseudosphere and hyperbolic geometry. My notes can be found here.