Quoted from DaveH:Actually it very much is a logical fallacy called "reductio ad absurdum". Reductio ad absurdum is a mode of argumentation that seeks to establish a contention by deriving an absurdity from its denial, thus arguing that a thesis must be accepted because its rejection would be untenable. You've used it several times in this thread.
I love that I learn something now and again from my fellow pinball enthusiasts.