system
Given the following post, respond as if you're commenting on Reddit:
human
[Stargate] Some things I've never understood about the stargate/iris.

So the iris blocks anything getting through the stargate. Ok. But why does it kill/destroy the stuff it blocks instead of sending it back through the gate?? I've always wondered why a person doesnt simply attempt to walk through the event horizon and fall back out like they walked into a wall since essentially that's what your doing, is it not?? Also if your on the other end of the gate and you dont know if the iris is closed or not, couldnt you just put your hand through and feel for it??? Thank you very much in advance for those willing to take the time to answer these questions seriously after like 9 years.🤦‍♂️😁👍
gpt
Stargates are more complicated than they appear. They aren't a simple wormhole from one gate to the other, rather anything that enters the sending gate is dematerialised and transmitted to the other gate as a stream of subatomic particles. The receiving gate then rematerialises you at its event horizon.

The iris is so close to the event horizon that there is no room to rematerialise you in one piece, instead your particles are simply ejected from the gate while still separated from each other. The gate connection is unidirectional so it can't simply send you back the other way.