For most of human history you survived inside a small group. A few dozen people who hunted, shared food, and watched for danger together. Alone, you did not last long.
So the worst thing that could happen was not a bad day. It was being pushed out. Exile meant no food, no shelter, no one at your back. It meant death, slow or fast.
Because exile was so deadly, the brain built a fast alarm for it. Any sign that your place in the group is slipping sets it off. A cold tone, a turned back, a comment that stings.
Brain scans show it plainly. When people are left out of a simple online ball game, the regions that handle physical pain light up. Rejection does not feel like pain by accident. To the brain it is the same signal.
The alarm is also lopsided. A threat that could end you mattered far more than a small reward, so the brain learned to weigh bad far heavier than good.
You feel it every day. Ten kind words and one cruel one, and the cruel one is what rides home with you. The praise fades by lunch. The slight loops for days.
This is why status never satisfies. You chase the raise, the followers, the proof that you belong. Each win quiets the alarm for an hour, then your eyes find the next rung up.
The old wiring is doing its job. In the tribe, the one with rank ate first and was protected. So the brain keeps scanning your position, every day, forever, alert to slipping.
Here is the turn. The tribe the alarm protects no longer exists. The stranger online is not part of your survival group. Their words cannot exile you from anything that feeds you.
But your body cannot tell the difference. It never could. The same alarm fires for a downvote and a death sentence, and you are left guarding a tribe that scattered long ago.