- By Dr Andrew Impey
- Published 06/18/2007
- Culture and Society
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Rating:
Unrated

Handing over a couple of pounds for a drink or a bite to eat is all too easy, maybe even pay with plastic if you are feeling that way inclined. Ten thousand years ago, however, you couldn't stick it on the credit card, you were more likely to be paying in cows - money has come a long way.