497
Order of magnitude is a hell of a drug
(lemmy.world)
Meme of two women fighting while a man smokes from a pipe in the background.
The women fighting are labeled "mathematicians defining pi" and "engineers just using 3 because it's within tolerance"
The man smoking is labeled "astrophysicists" and the pipe is labeled "pi = 1"
At least do 22/7
(355/113)/ pi = 1.0000000849136...
That's way more numbers to remember than 1/7 above 3