"What are the biggest ways in which the world 20 years from now will probably be different from today? What are the biggest "X factors" (changes that are not pr

"What are the biggest ways in which the world 20 years from now will probably be different from today? What are the biggest "X factors" (changes that are not probable, but are possible and could be huge)?" Come on Quora make up your mind: probable or not probable??? As of possible...mmm anything is possible!