Two things.
First, some months ago, I posted about this incredibly annoying debating tactic. See here.
Second, the Laffer curve? Seriously? I suppose that the Laffer curve is real in the sense that there is a point on a curve that represents the tax rate that will produce the maximum revenue.
However, as generally used by conservatives, which is to mean that the lower tax rates are, especially on the rich, the higher tax revenues will be, the Laffer curve is absolute bullshit that has been shown to be nonsense, and nobody with a brain believes it, not even those who profess to believe it. It’s just a line of bullshit to convince the credulous that the rich are the job-creators, and if we dare to tax them fairly, they’ll take all their jobs away from us and we’ll starve.