Me (in the bedroom, reading a book for fun): Wow, that's really neat!

Spouse: ?

Me: If you plot a single-exposure, common-vehicle epidemic onset curve logarithmically, it turns into a normal curve, and you can do mathy things to it.

Us: discuss for a bit, and spouse goes off to feed Kidlet.

Me: wander over to spouse's computer. Love and behold, smack in the middle of the screen is a normal curve showing intra-pupilar distances.

Sometimes, it's the little things...