[Centurion2000]

When I buy stuff, I do the change in my head to keep my arithmetic faculties from decaying...

I do the same thing. What's hilarious is when you get faster than the guy typing it into the cash register. You tell them the change, and they look in you in absolute wonder like you just cracked the ENIGMA code or something.

I feel great because as I age that means that there will be less and less competition from youngsters in really demanding technical fields. Of course it spells doom for the country over the long term.

[Little Ray]

Yup. I'll never have to retire. Which, given my finances, is a good thing...
Of course, I'll have a lot of vacation accrued...