system
Given the following post, respond as if you're commenting on Reddit:
human
If defibrillators have a very specific purpose, why do most buildings have one?

I read it on reddit that defibrilators are NOT used to restart a heart, but to normalize the person's heartbeat.

If that's the case why can I find one in many buildings around the city? If paramedics are coming, they're going to have one anyway.
gpt
Long story short, the sooner the response time to a cardiac event, the better. If a person has a cardiac event and another person around is able to administer the AED then the treatment begins and the paramedics take over upon arrival.