Bitcoin Substitutes are not required for Bitcoin Fractional Reserve Banking any more than dollar substitutes are required for Fractional Reserve Banking with dollars. Even Fractional Reserve Banking with gold currency is possible- no gold substitutes are needed.
--Atheros 05:14, 7 November 2011 (GMT)
Bitcoin Substitutes are required. Please explain how otherwise you can expand the supply without using magic.
--PeterSurda 10:00, 7 November 2011 (GMT)