english: For instance, if you let your sheep out of a pen to graze, you can keep track of how many went out by setting aside a stone for each one, and putting those stones back one by one when the sheep return, so you know if any are missing without really counting.
non_english: Recimo, ako pustite ovce iz obora na ispašu, možete pratiti koliko ih je otišlo tako što ćete odvojiti po kamenčić za svaku, a onda vratiti te kamenčiće na mesto, jedan po jedan, kako se ovce vraćaju. Na taj način, znate ukoliko neka nedostaje i bez pravog brojanja.