Cars? Jets? Humans have been refining transportation for ages. We've had horses, chariots, wagons, boats, carriages, and more for centuries. So a car is a refinement of the entire concept of a vehicle, which we've had ever since the bronze age. Same with a plane - plus, we have obvious inspiration for flying because birds happen to exist. Insects exist. How are these concepts original? They're the culmination of technological development through the industrial revolution and beyond.
CDs aren't original. People have been working on ways to record and play back music for centuries. We've been developing new and more efficient ways to store information in anolog and then digital form for decades. CDs are again the culmination of technologies over a period of time - it's not a truly original or new idea, but a repackaging of an old idea.
My point was that people don't invent things out of the blue. No one lives in a vacuum, no man is an island, etc. While we can constantly rearrange existing ideas into new configurations, we're still starting with a saturation of cultural influences that cannot be ignored. Please find an example of something that was created without any outside influence, something that has no conceptual connection to anything else that's ever existed. Technology that is not built on concepts and technologies that came before?
How about the wheel?
And even if these are all refinements of earlier ideas, that earlier idea had to come from somewhere. There has to be an initial, original idea from which these others take their inspiration.
hmm... I guess this argument is a lot like determinism in physics. "That effect was caused by this, which was caused by this, which was caused by this..." "This idea was inspired by this, which was inspired by this, which was inspired by this..."
So the same logic that says there has to be a "prima causa" could claim that there has to be a "prima idea".
I will concede the point that my initial examples weren't valid ones, though.