They would begin to chop down the trees, and harnest power from burning them. Civilisation would spring up once again.

After a while the race that evolved from the monkeys, wuld have a strange thing referred to as "Internet" where they have "forums" for communication where people post a lot of things like philosophising about what might happen in the future.

If that happened, then oppressive moderators would threaten to remove their essential predictions.

And people would complain about their predictions being useless.

And then their predictions would come true, and everybody would formally apologise to the two prophets.

And the two prophets would come into a strange papery object which contains news.

Upon examining the paper, the prophets would find strange mimicrys of their appearances. And verily, both would be pulling stupid faces therein.

Thus people would once again laugh at the prophets.

So, enraged by the incessant laughing, the prophets would train an army of gnats to attack their detractors.

(Erm.. Gnats interesting.)
And the detractors would be so afraid of that action that they would call the asylum and that the two prophets would be shut in because they were clearly insane.

From the asylum, the prophets would convince others of their truths and incite a revolt against the wardens.

And the revolt is of course an amazing succes, resulting in a new religion ultimately being born, a religion all to do about posting philosophies about the future on forums, and spreading the cosmic wisdom encaptured therein.

Soon, aliens discover that intelligent life has finally arrived on Earth, and make their appearance at last.

OK!
stop talking
this thread is about Nothar

And when those aliens come they will be greeted by the automatic "Hello, welome to Earth. Enjoy your stay here and be sure to check out some of our travel brochures acquirable at NASA", which then turns out to be the worst possible insult in the aliens language after which they instantly declare war on Earth.