By observing that the USD did not "collapse" despite it?
Plenty of BitCoin people seem adamant the USD is definitely going to collapse, but can't explain why it hasn't already, or where the instability causing it too would come from, or why smaller, less wide-spread currencies don't do the same barring exceptional circumstances (i.e. Zimbabwe).
Plenty of BitCoin people seem adamant the USD is definitely going to collapse, but can't explain why it hasn't already, or where the instability causing it too would come from, or why smaller, less wide-spread currencies don't do the same barring exceptional circumstances (i.e. Zimbabwe).