Had this thought after seeing various tattoos in the gym shower - while I’ve had tests where formula sheets were allowed, I’ve had others where they weren’t. It occurs to me that if I thought physics / chemistry / etc. formulas were interesting enough, I might have them imprinted indelibly upon my person. In such a case, would it be cheating to use them under test conditions? I’ll always have them with me, so memorizing them would seem superfluous. OTOH, at my job I always have access to all the formulas I want, so you could argue that was never the point.
Thinking about it, I always have access to a calculator, but I wouldn’t propose giving up teaching basic sums, and tests w/o calculators would seem to be a necessary way of ensuring that happens. :dubious:
The only discussion I could find online related to hiding actual answers in tattoos, which seems excessive but that’s just me.