It doesn't even have to be a finger. There are so many underused parts of the body

That was one incredible cyborg rabbit-hole I just went down.

Get ready to make friends with every TSA agent you see for the rest of your life, and pray you never need an MRI.

Fair point, but then, most people don't have this.

And even if you do it, you need to get some experience for your brain to develop a model of what to expect in certain situations. For instance, your brain will need some time to get used to the fact, that putting our hand on a fridge will give the brain new sensory stimuli because of the magnets on the fridge.

This intuitive understanding of light and sound is just that - brain neurons being used to what to expect. And even with an implant you would need to train that.

Though I'm definitely curious to experience once how that would feel like 😄

detecting magnetism will rarely be useful for humans especially in the context of survival

Good point! 😄

We also don't have any feeling of how that's like!

Tory Belleci did that in an episode of the white rabbit project and talks to people who've had them in them implanted for a while.

This sounds really interesting. Do you have any clue who did it or any other context? Id like to find out more.

I don't even know that implanting them is necessary. See the idea behind this device, which gives you a sense of direction relative to the Earth's magnetic field.

I think a wearable device with the right type of feedback would probably work too.

You would be in serious trouble if you ever needed an MRI...

Actually putting a magnet in your fingertip so you can "feel" magnetic objects is a bodymod I've heard some people do

But yeah, like @[email protected] said, MRIs probably aren't an option ever again unless you have it removed. I guess removing one from your finger would be easier than everywhere on your body.

Edit: I should have read the comment section before typing this, people are already talking about it lol

Fair point, I didn't know about that. But even then, most of us don't feel like we can feel it - and in the modern city living spaces it gets even less important to train such a sense.

We kinda do though, we just don't often see them as having magnets but most electric motors work on principles of magnetism.

My daughter and her friends are all into ICP and all I can think of is the fact that they're too stupid to understand magnetism and think that no one else understands it either.

[Y]ou don't have a specific gravitational field sensor in your body per say.

I'd argue that the vestibular system in your inner ear qualifies as a gravitational field sensor.

The example with gravity is interesting indeed. We have only acceleration sensors behind our ears, but our body notices the pressure of the body tissue pressing down towards the gravity. And obviously, we also feel gravity when moving.

However, the difference to magnetism is, that we frankly don't have any contact with magnets during our evolution - except for the earth's magnetic field.

Even if we are able to sense it, it's definitely far from being able to reliably feel it like we do for gravity.

Instructions unclear, super glued magnets to my body.

I have to disagree there regardless of how one interprets "know".

If you mean "know intuitively", then we don't, precisely because we have no sensors for it and hence no experience with it. We intuitively know light, because we sense it and know what to expect in a closed room with no light source.

If you mean it scientifically, then light and magnets are extensively studied and far from "know nothing about it". Our knowledge of light, magnetism and sound is very good on all levels.

Fucking magnets, how do they work?

Would you mind defining "we don't really know how it works"?