mainstream economics is based on assuming various correlations and then projecting those correlations into the future. but, that's not how you do science; in science, you have to demonstrate the correlation with empirical evidence, and they just don't do it.

they'll tell you they can't do experiments in economics. fine. but, stop calling it a science, then.

in fact, if you look at actual reality, you'll see that the evidence generally collapses most of the correlations. for example, the idea that corporate tax rates effect employment - they simply don't, that's an assumption that the evidence has debunked over and over and over again.

so, they'll tell you it's "bad economics" to push for higher corporate taxes.

in fact, their economics is bad science - the evidence suggests the opposite of what the theory does.