You are a moron.
Coming from you, that carries no weight at all.
Fiat currency has nothing to do with the 2008 crisis.
What's your next guess?
The whole problem was caused by a huge shadow banking system that essentially allowed to use private debts as if they were a currency.
All enabled by the Fed. You really weren't paying attention, were you?
Without the Fed holding down the interest rates by inflating the currency, rising rates would have limited the pyramiding of debt on debt.