>> Could I reproduce this patented system without ever reading the patent just by looking at the results of it

> This reasoning is deeply flawed. There is a tendency for something to seem "easy" or "obvious" after the fact, but this is ignoring all the insight, effort, and risk it took to find that initial successful path to the solution to begin with. Take a look at the Occulus Rift for example.

You're right, you didn't explicitly say that Oculus Rift is an example for a system that could be patented because it is more complex than it seems. But if I had wanted to make the point that I believe it is patentable I could have phrased my argument in the same way as you did to imply it implicitly.

> Why are people incapable of comprehending an argument as presented, rather than attempting to make connections that do not exist in the text?

Because communication is always context dependent. It's easiest to see in the extreme ends, for example math, where you invent an entire sublanguage / dsl for precise communication and still your definitions change with the context you are working in: Does a ring contain a multiplicative identity element? Which operations is the homomorphism homomorphic in? We leave out these details, because most of the time it helps communication because everyone is on the same page as you anyway and those extra bits and pieces distract from the core argument. Then there is stuff that the reader is faster to figure out for him- or herself than reading "the proposition is true for the base case n=0 of the induction as (3-0)^2-9=0" or sometimes even faster than "the base case is obvious"