Now, all joke aside, there was an exhibition at the Tate Gallery
about this and a book written too
http://www.tate.org.uk/modern/exhibitions/capital.htm
http://www.chanceprojects.com/node/71
I went to the semminar and one of the questions I put to the panelists was exactly that, is money real? and the answer was similar to that of the onion
Money is just an illussion supported by us, we could be giving value to shells like the Mochica in Peru did or to nut shells?
Love