Some things that are almost certainly true but that almost everyone now highly doubts, and nearly everyone will call you crazy for believing:
1) Humans face a much greater chance of extinction than nearly anyone acknowledges; this lack of acknowledgement is mostly due to hubris.
2) Eating meat from formerly live animals will in less than 100 years will be seen as nearly as monstrous as killing a human being.
3) If (and that’s a big if) humanity manages to avoid extinction and technological society continues, we or our much-different successors will attempt to leave the solar system, and likely succeed.
4) Creating an AI is absolutely inevitable, and that may mean the extinction of humanity.
5) We will succeed in “uplifting” animals to human intelligence and beyond.
6) If humanity does avoid extinction, within 10,000 years human bodies as we know them now will be no more.
7) In the future, there are really only two alternatives: Nearly no one has jobs as we now think of them, or nearly everyone is in slavery.
8) Sometime before we relinquish physical bodies altogether, changing physical sex will be as easy as wishing to do so.
And for those who doubt the extinction risk of humanity, ponder this.
Ninety-nine percent of the species that have lived on Earth have gone extinct, including more than five tool-using hominids.
Why would you think humanity would be any different at all, especially with all the amazing tools we have now with which to kill ourselves?