Other than basic math, I have no evidence. It is entirely possible that 2 + 2 = 5. I can prove nothing different, not to your satisfaction.
Yes, if you believe that lowering taxes increases GDP, if you think that there is a cause and effect there, then you have a point, but you already rejected that idea. The question is, then, how do we get that higher number?
I believe I already did, but perhaps not. Maybe 2 + 2 really =3. I'm not sure any longer.
Just how would you increase GDP? Perhaps sending jobs to China.. no we tried that already.
Of course spending more than we take in has everything to do with it. That's why I said we need to take in more, and spend less.
Lowering taxes while not cutting spending did cause a deficit. But, you do have a point: Few political beliefs are rational. Trickle down economics is high on the list of political beliefs that are not rational (just as a wild example, since you've already said you don't believe in trickle down... or did you?)
