Re: [math-fun] Hot & Cold

While we're at it we could score higher on the Martian intelligence test by universally adopting saner basis vectors for the control space in the first place--namely temperature and total water volume, rather than hot-volume and cold-volume.

I recall my first trip to Israel, when I was confronted with a shower that had *three* water control knobs. Being a cautious sort, I tried turning each one on, one at a time. No water ever came out. The knobs, of course, were rates for hot, cold, and total, all initially set to zero. This does offer all the advantages of both systems... --Michael Kleber kleber@brandeis.edu