the.com/approximation
Close enough to be useful, wrong enough to keep mathematicians employed.
means A value or model that's intentionally inexact but near enough to the truth to work.
from From Latin approximare, to draw near — proximus meaning nearest, the same root that gives us proximity.
Engineering creedPi equals three when budgets are tight.
Physics jokeAssume a spherical cow in a vacuum.
Error mattersGood approximations come with honest error bars.