It just seems that calling someone that predicts what may happen in the future, false, is not possible.
I believe it is possible to categorize Al Gore as a false prophet based on his lack of scientific experience, false statements of fact, and hypocritical lifestyle. It is an incovenient truth that he proposes to “know” what will happen with such a certainty that there is no room for doubt. Meanwhile, he has made hundreds of millions of $$$ as a result. Even if what he preaches comes to pass, I do not trust his motives.
yes the important thing is to never be definitive on time-frames or absolute conditions that will eventually be false.