The underlying point of my answer is that there is very little new under the sun. Most everything we "enjoy" today, is merely an extension and improvement of an idea that someone had earlier. From assault rifles to television to space flight. We merely extend the path of those that walked it before.

I never have thought that the trope "If you want an answer to a question, post something wrong" was a good method. If you have a question about something, ask the question. The problem is, most people ask their questions in the wrong place. Don't ask a question about fixing your car in a hair salon. And don't ask about hair cuts in a mechanic shop.