Reminds me of a widely circulated bit a couple years ago about this legendary climber, some doctors put him in an MRI and came to the conclusion that he basically doesn’t experience fear (mutation?). https://nautil.us/the-strange-brain-of-the-worlds-greatest-s...

I’ve climbed with him a few times. His whole emotional pallet is very flat.

No joy, celebration of accomplishments, etc?

...in mice

and it is turned off with a virus

The adeno-associated virus was an inert viral vector carrying a targeted antagonist that prevented the transmitter switching. The blocking agent was an anti-depressant.

"...And they shall know no fear."

https://imgur.com/a/5oMQhEu

Exactly what's needed for the WWIII, if the virus can be mutated for humans.

thanks, we should all strive to keep HN free from clickbait titles

so, rabies?

Thanks for saving me a click