Listen you patronizing jackass, I'm 57. I well remember Reagan and his "trickle-down economics". And yes, they were a failure.
This is a matter of your milage may vary. January 1980 was a horrible time. Gas lines, high unemployment, inflation..not to matter the ridiculous place we were in terms of foreign affairs. And there was a really tough stretch in there as we squeezed out the banana republic level of inflation that Carter stuck us with, but things were so much better by 1983, and it was a whole different better place by the end of Reagan's administration.
I also have a beef with the whole "trickle down" thing. Tax cuts for everybody, fewer tax expenditures on those who were good buds of congresscritters, and a tax system based on "getting the most milk with the minimum of moo" productive work made productive profits, which meant higher employment (not just lower unemployment) at higher wages.
It worked for me.