IronGoober wrote on Nov 12^th, 2021 at 12:24pm:

that gives us the theoretical limit of accuracy for slingers
so shooting a hair and not miss is an expression unless you are doing it from 1m, because no human eye can see a hair beyond that (?)
I used hair width =0.01cm

Sarosh wrote on Nov 12^th, 2021 at 3:51pm:


It’s possible that the Benjamite tribe may have had particularly thick hair… so 2-3m? 🤣

It’s pretty clearly a hyperbolic figure of speech.  The term is usually used in the opposite way… “don’t harm a single hair on their head” but you have to consider the size of the ammo too. A fist-sized stone would hit a hair at a longer distance without violating the statement even if it were literal because the ammo size matters more than the thickness of the hair.