[gspr]

> In actual fact, people who need software built hire a tool (e.g., a software developer like me) to build it for them. That tool - me or you - has inside it a tremendous library of copyrighted works represented.

Humans are distinct from tools, both ethically (to most people) and legally. You may not see it this way, but it is the majority opinion and the stance of the law in most jurisdictions. The rest of your paragraph falls apart without considering humans as tools.

(Incidentally: you can own tools. I don't think you want to open that door…)

> Is your position that this is OK so long as it's stuff that I can keep in my squishy brain, but the moment that mechanism moves to silicon, it somehow becomes fundamentally different?

Yes. We, humans, structured our laws because we consider ourselves and our squishy brains special.

This is, for example, why you don't get charged with murder for terminating a computer program. We, the humans, have decided that the right not to be terminated only applies to humans (and other animals, but then because we grant them that protection).