Thinking is my hobby. But sometimes you get to where you're stuck and you can't figure it out, so you just go work on another project. I always have multiple projects.
Nothing that has value, real value, has no cost. Not freedom, not food, not shelter, not healthcare.
People take the longest possible paths, digress to numerous dead ends, and make all kinds of mistakes. Then historians come along and write summaries of this messy, nonlinear process and make it appear like a simple, straight line.
A patent, or invention, is any assemblage of technologies or ideas that you can put together that nobody put together that way before. That's how the patent office defines it. That's an invention.
Every once in a while, a new technology, an old problem, and a big idea turn into an innovation.