A simple question today:

Which do you prefer,eor π?

They’re both irrational, they’re both “about three,” and of course they’re related by Euler’s formula, but they’re very different. One is the ratio of the circumference of a circle to its diameter, the other is the base for the exponential function.

You can only pick one: which one is it?

I think I’ll go with *e*. Nothing against π, but I’ve spent a lot of time working with differential equations, and you just have to love a function that is its own derivative.

And nobody has ever been dorky enough to attempt to show off by memorizing the first hundred digits of *e*.

What’s your favorite irrational constant?