Makes sense when you think about it. The property of magnetism is caused by the alignment of the atoms in the material. Surely this ordering is as subject to en

Makes sense when you think about it. The property of magnetism is caused by the alignment of the atoms in the material. Surely this ordering is as subject to entropy as all other order. But the speed at which people are reporting their magnets losing strength makes me think they're either using low-quality magnets, or their brains getting used to the sensations and tuning them out. I think if mammals had an evolutionary purpose for sensing magnetic fields, they'd already have methods for doing so. From recollection I think dolphins have this trait and use it to navigate.