Now I'm not a PMI (perpetual machine inventor). In fact I'm quite convinced that there is no such thing as that. But a while ago, I saw the schematics of a perpetual machine that is hard to debate. Well this is how the machine worked. The inventor argued that if you have two magnets as arranged in figure A, with a ferromagnetic substance in between, the magnets will be attracted toward the metal. But as you bring the objects upwards, they'll repel each other as the metal gets thinner and the end is reached. Now based on this argument, he created an arrangement as shown in B and argues that these wheels would rotate forever, as the magnet's attract at the bottom of the metal piece and repel towards the top. Now this looks very convincing. Can anyone resolve this???