system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5: If pain receptors are our bodies way of informing our brain that something is wrong why can the brain not mute or at least dull the pain you’re experiencing after it has already received the message and a fix for the problem is not in the near future?
gpt
It can and does. Think about people who don't realize they've been hurt - you'll hear about it every now and then. Our bodies and brains naturally dull pain when they think something urgent needs done. Adrenaline is a hell of a drug in this respect.

However, we cannot do it consciously, as (I'd assume) people would use this ability irresponsibly and ignore pain, resulting in the use of damaged body parts and further damage. In fact, even without the ability to block pain, we *still* do this, but to a lesser extent.