Hello, Please forgive my ignorance. I am not a mechanical engineer or physicist by degree or trade (I am a software engineer). I am well aware that perpetual motion is a violation of conservation, and that (even if it were not a violation) perpetual devices could not perform work. My question is about harnessing forces available. Why is it not possible to configure a system next to copper that, as an example, raises a magnet with a magnet, then lets the magnet fall with gravity? My (almost positively unoriginal) idea would be to have the magnet in motion welded to a gear system (or something; again, I am not knowledgeable on the subject) that, as the magnet moves, rotates a horizontal fan-like insulating component between the magnets. In the first phase, the magnet is at the bottom; in the second phase, the magnet has moved almost to the bottom of the fixed magnet (during motion, the insulating material is moved to block the field); in the third phase, the insulating material blocks the field completely, allowing the magnet to fall with gravity. Any balancing effect could be (I imagine, with my current understanding) circumvented with a feedback to a well-placed electromagnet... Again, I know it is not possible...but why? Thank you.