One evening a robot asked me if I might be interested in doing some shopping. Of course I said yes! We walked a few minutes through the center of town to a bustling, vibrantly lit, street market. There were tiny shops, stalls, carts, even small tables with banners; all displaying all manner of goods. The robots had a most interesting system: I didn’t witness any money or currency change hands. They appeared to either barter or use a form of social or reputation credit. Their transactions were fascinating!