The supply response (will people bother to work if you tax them too highly?), the avoidance response (how much will people fiddle their taxes?) and the bargaining response (a slightly odd thing that need not concern us here).

FORBES: Why France's 75% Income Tax Rate Is Going To Be So Disastrous

"The classic response is avoidance, because people don't want to think about it or go to places that remind them of it, " Jones said.

CNN: Finding 'new normal' after school shooting