I understand the money supply and the multiplier effect of fractional reserve banking, but with an appropriately designed cryptocurrency you don't need it. You

I understand the money supply and the multiplier effect of fractional reserve banking, but with an appropriately designed cryptocurrency you don't need it. You can literally just create more currency out of thin air and pump it into the economy like an instant perfectly efficient printing press. In fact, you could probably utilize the increase in the money supply in much more productive ways than the current system, which primarily benefits banking institutions.