Who can tell me why 1+1=2???(I'm not jocking!)

i think i can`t answer your question but i know 2+2=3 3+3=6

Because one finger plus one finger is two fingers.

你就跟老师说：“Because most of people said 1+1=2,so 1+1=2.If I say 1+1=3, other people will say I am crazy!”
（顺便说一声：是joking不是jocking）