"A piece of code in C is applied math, but a mechanism with cranks and pulleys is not?" Software patents is not even about code. Almost nobody that patents sof

"A piece of code in C is applied math, but a mechanism with cranks and pulleys is not?" Software patents is not even about code. Almost nobody that patents software makes code public accessible. With a patent you are supposed to make public the plans, in exchange of the monopoly. The idea of patents was that anybody could replicate the work reading the plans, so society advances when the author of the original work dies. With software patents the code is not there, so it becomes monopolies for abstract ideas, the more abstract the better.