Reagan created and governed on unprecedented peacetime deficits caused by his military spending and tax changes. If his policy had any meaningful influence over the economy of the 80s it's likely the massive deficit spending.

That said, the link between presidential policy & short term economic changes is universally overstated. The government can cut down basic research funding and the effects won't be felt for a half century.

Prosperity of the 80s? You mean the era that signalled the end of the post-war golden age of capitalism and brought about hyper-financialisation (which led us to the 2008 catastrophe from which we still haven't recovered) and the decline of tax progressiveness and public services (which supercharged wealth inequality back to gilded age levels)?

Many of our current problems can be traced back to changes which occurred in the 70s and 80s.

Yes, prosperity on GDP numbers, blessed be Its name. Unfortunately not everything is reduced to making line go up.

> High taxes always drive capital away into unproductive tax havens.

Citation needed. Show me data that demonstrates that use of tax havens is correlated to tax rates. The data over the last 30-40 years at least at first glance seems to disagree. Tax rates (in particular top income bracket, capital gains and corporate taxes) have continously reduced, while the amount of money in tax havens has increased.

The revenue corollary of PAYGO.

I support tax cuts being tightly coupled with much reduced tax avoidance. Retroactively.