dazzling on Nostr: But it is also super energy efficient. Features that do not contribute to survival ...

But it is also super energy efficient. Features that do not contribute to survival are dropped pretty quickly. And since this is an almost universa humanl feature it must have contributed to our survival at some point.
But it may also be some other system inour brains that is misfiring, but is not dangerous for us, so there has been no pressure to drop it.