What Was Your Favorite Non-Computer Science Thing When You Were at Stanford?

I don't know what it is right now which is I think a curious thing. And even maybe if you can get a bunch of that stuff in a simulation environment where the cost of doing an experiment wasn't so high. But like I think it has to be something I mean like your point about it's always a use it's always something it always starts looking kind of like a toy and then it just keeps going. Yeah. So there's like nothing that's more fun than a great physics class right? Ooh. Well I'll answer my favorite physics book but it's related to my favorite physics class. And quantum electrodynamics I think is the best science book ever written