The question if framed too loosely. Only an imbecile would say that that supply side economics does not work. The real question being posed and answered here is how efficient is it at transferring wealth in our economy. The statist argue that it is not as efficient as the outright theft that they propose in the form of taxes. Warren buffet is a hero today because he merged two companies and will over see 1000's of jobs lost. He should be pilloried by public opinion for such gluttony . There should be an unacceptable amount of shame in the community for such piggish actions. people talk out of both sides of thier mouth on the matter because they invest their retirement and net worth by betting on such behavior . Not hard for greedy types to take advantage of these peoples inconsistencies in life.