By the same logic, we are not easily able to conceive of future inventions (if we were, they would have already been invented).
I find this is true when writing books. If I can conceive an invention, someone has already made it. For instance, I randomly thought of a corn cobber. There are many available. They are usually called corn strippers.
Hmm, I should open a gentleman's club. Surprisingly, there aren't any on Google.
