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One of the ɹrst recorded attempts to study magnetism in scientiɹc terms was in 1269. Until then, everyone considered magnetism to be a magical phenomenon. But Peter Peregrinus, who was serving in the army of the king of Sicily, took a diʃerent tack. He decided to write down everything that was known at the time about lodestone (a natural magnetic ore) and how to make instruments using it. Three hundred years later British scientist William Gilbert would again take up the challenge to explain magnetism in rational terms. But another whole century would pass before scientists began to think of new ways to understand magnetism. Even then, it took the invention of highly abstract mathematical concepts before invisible forces like magnetism could even begin to be understood, and the truth is that even today we still don’t understand fundamentally what magnetism actually is. We’ve learned a few tricks that describe how it behaves under certain circumstances, and we can make machines that take advantage of that knowledge. But that’s all. In any case, it took half a millennium for science to learn enough about magnetism to make it practically useful, and unlike psi, magnetism is easy to demonstrate.
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