Debt the first 5,000 years (an interview with the author David Graeber)

An interesting interview (the second half of the programme) where David Graeber describes his anthropological study of 5,000 years of Debt which shows that dispensing credit precedes even the invention of money.

Hear the interview at:
    http://www.bbc.co.uk/programmes/b0196rp1

See the book:
   http://books.google.co.uk/books?id=GYhajCQU8XIC