system
Given the following post, respond as if you're commenting on Reddit:
human
[Fullmetal Alchemist] What the HELL was Ed talking to when he found Al's body at the Gate?

So when Ed opened the Gate to escape from Gluttony's insides, he found Al's body waiting for him in the in-between space. He then proceeded to exchange a few words with it. But since Al was very obviously not inside it, and it wasn't comatose like it should have been, what was Ed talking to? What was inside it and animating it?
gpt
It was Truth but the part of Truth that is Al's physical body. In short Truth is the entire universe minus the parts that are the person talking to it. That is why the being is basically a hole shaped like the petitioner, that is literally what Truth is. When Truth claims a part of a person it fills that hole in everything. So Al's Truth is literally everything that exists other than Al's soul.