Money is a social construct

Silvio Micali

if I'm a mason and you ask me to build a wall in your field and I do. 

And in exchange you give me a thousand sheep, what am I going to do with them? Eat them all? Keep and feed them.

And if I don't feed them, they die!

So in receiving these livestock, I must believe that somebody else will accept them in return for something else. 

So this is a social belief, a social shared belief system that makes people transact

*he may be a shitcoiner but he's one intelligent man