All the facts presented show conclusively that declarations about what will be require no qualifiers like "perhaps" or "...On the other hand, things like this are hard to predict with much precision, so maybe...". The prophet perceives trends and extrapolates them. This is done with near perfect knowledge of why trends are headed where he sees them going, and perfect knowledge of what factors and counter-factors may determine where they go in the future.
As often as not, the thing the prophet is cock sure of, due to overwhelming and uncontradicted evidence, is doom.
Maybe one of these days one of these guys will be right. He will look at it carefully and understand all the factors at work with piercing clarity.
Then, sure enough, doom will come, just like had he said it would. Doom will come for the exact reason he said it would. Because he was right, we will all be screwed or dead.
He will be a first - or, at the very least, one of very few.
Maybe the author will be that guy. Maybe Al Gore will be.