What could be an intro for an essay of the world in 2067

a intro to an essay could be In the beginning of the 21st cincture people thought we would have cars that fly, and other amazing thing but in 2067 we have amazing thing but not like people imaged it.

a myth is something that is told for many years that u go looking for and cant find and a truth is something that u can find in real life and can be story's of for example:

mermaid's and unicorns: u can't find them at all so they can be a myth cause u hear story's about them once u go looking for them u won't find them.

dinassours(can't spell): u hear story's about them at school by ur friends and one day ur dad takes u to a museum and u find fossils of them so u realize they are real and not fake.