If you want know about A.I lets ask one of the makers of A.I..
1...20 years or less could be smarter then all of us..
2...one person can use A.I to make a virus that kills us all...
3.. it just takes over all the jobs.. and we war to the death..
4..We need so much power for all the A.I robots We build more nuclear power plants and poison ourselves that way ... plus less regulations so maybe a meltdown or 2 would do it?
5 he says it is 1 in 5 chance once it is smart enough it could decide does not need us anymore. And just wipes us out..