Quote from zdreg:
it is always the same nonsensical reply from people at the losing end of a debate. go do the work yourself.
if wilikipedia has something to contribute copy and paste the essential parts to this thread.
When one or the other of two debaters makes an
ad hominem remark or attempts to characterize their opposition as being at the "losing end" of the debate the affect on the audience may not be what was intended. Here is some friendly debating advice for you.
Ad hominem attacks, and attempts to characterize your opposition as a loser don't sit well with the judges. You did yourself no favor. If you want to win a debate, focus on verifiable facts, if possible, and failing that focus on reasonable conjecture. You'll do much better. If your opponent fails to provide any factual information bearing on the issue, it is not necessary to point it out. We, in the audience, don't like condescension. The judges, on their own, will duly note which side has presented the most convincing arguments.
In the present case, you might begin with data that describes how the distribution of incomes among the populace changed after trickle down economics was adopted, and contrast that with the change in income distribution in the immediate prior years. Then you might go beyond mere correlation to show that trickle down is, or is not, causative by noting the changes in income tax bracket rates, the changes in federal expenditures, the effect of privatization that begin with trickle down on costs and incomes, the effect of government borrowing and inflation that is attributable to trickle down, etc.
You may not succeed, but this way you will have a far better chance of prevailing. Good luck!
By the way,
ad hominem remarks are not always ineffective or ill advised and can be as delightful as Reagan's clever comment that he had no intention of taking advantage of his opponents youth and inexperience, which occurred during a debate of candidates for president.
http://grammar.about.com/od/ab/g/adhomterm.htm