I should probably care what happens to the rest of them, but I don't even want to contemplate my world without my INTP.
“There are two novels that can change a bookish fourteen-year old’s life: The Lord of the Rings and Atlas Shrugged. One is a childish fantasy that often engenders a lifelong obsession with its unbelievable heroes, leading to an emotionally stunted, socially crippled adulthood, unable to deal with the real world. The other, of course, involves orcs.” ~ John Rogers
The INTJs would be left alone and totally responsible for academic/technological/scientific innovation.... but, being that they're INTJs, they can't come up with any original ideas.
Bears, however, will continue to evolve... and the inevitable will happen.
INTJ's can come up with original ideas with their N, but they're just not as likely to do so since they make decisions faster (J) rather than holding out to collect more information or review the problem more (P).
Well at least there'd be no more people like bluemonday and Jack Flack. That's always a positive in my books. But then again we'd have to settle for INTJ smart-assery, which is much more certain and assured. It would get annoying rather quickly.
There wouldn't be as many philosophical ramblings, or especially technical and intricate, elaboration prone literature to read. Online forums would largely collapse, or become so fluffy and affirmative that little discussion would be had. We need a certain amount of conflict and critical thinking, it does you good, even though you might not always appreciate or recognize it. Sometimes it really is necessary to mindlessly nitpick, test, expound on the fundamentals just to prove a point or figure out if a point is valid. Interpretation and comprehension is a key asset that can and should be applied to all that we do. Who better than the nerds who actually enjoy such boring and trivial things.
My cold, snide, intellectual life is just a veneer, behind which lies the plywood of loneliness.