[AussieWog93]

I couldn't tell you why the CI is accepted long-term, but the penetrating electrode arrays like the one in the article actually puncture the surface of the brain with tiny needles and cause the surrounding tissue to scar/calcify.

There are non-penetrating arrays that sit just above the brain (avoiding this problem to a large degree), but they don't have anywhere near the precision of the penetrating sensors.

[eternityforest]

Will Neuralink have the same problem? Seems like that would put a big damper on the insane level of hype around it.