2012-12-20, 07:06 PM
What's wrong with using collateral? Say you're selling a belt to someone for 3b. You guys talk it out and agree on the value of some other item he has, e.g. his shoes for 1b. He trades 2b + shoes to you at the same time you trade your belt to him. Then he trades 1b more for the shoes back. It's easy and risk free.

