[bigbillheck]

> Pi is wrong, and you know it, it's just that you (likely) feel that it is too late to change it, so why fight against history?

I'm also a mathematician, and pi is just fine.

> 1. Pedagogical: I never "got" radians, or had a really firm grasp on trigonometry until I had heard of tau-vs-pi.

The way I remember it, I learned trigonometry via triangles, whose internal angles sum to tau/2. This is absurd! Why don't they sum to a whole thing instead of a half thing?

> 3. Boundary pushing:

By the time one gets to the cutting-edge, of all the things that are holding one back a missing or extra factor of two is certainly not one of them.