Brains are incredibly adaptive. There are tons of experiences where people have had diminished or lost access to one of the senses and recovered surprisingly we

Brains are incredibly adaptive. There are tons of experiences where people have had diminished or lost access to one of the senses and recovered surprisingly well. I had a colleague once who had a stroke and described his vision afterwards as looking though splintered glass. After a while, he explained he didn’t perceive it anymore and that his brain just decided to “workaround” the issue making new connections where needed. I think having some “sense” of magnetic fields could be very subtle, like just a feeling of which direction you’re facing when you’re turning around (you could argue you already use the position of the sun this way, subconsciously). People into body mods who get a magnetic implant often describe it as a sixth sense [1]. [1]: https://en.wikipedia.org/wiki/Magnetic_implant https://en.wikipedia.org/wiki/Magnetic_implant