(November 11, 2012 at 12:10 pm)DoubtVsFaith Wrote: So, you think that it's logically fallacious to say that existence is always existent and never nonexistent? Well if you're going to argue that "X is always X and never not X" is a logically fallacious statement then there's no point in continuing, indeed.First, as already noted, a tautology is indeed true, but is regarded as a fallacy because it adds nothing to the argument.
Second, as already noted, you pulled a bait and switch by replacing universe with existence.
Third, which I haven't bothered with before, is that you pull another bait and switch, equating existence with existent. I will indeed argue that X is not necessarily something that sounds a lot like X.