system
Given the following post, respond as if you're commenting on Reddit:
human
Is the sheer size of the yellowstone magma chamber keeping it from erupting?

I think it doesn't matter how big it is,  it WILL erupt. But my brother thinks that maybe the sheer size of the chamber is keeping it from erupting. He thinks that the amount of energy required to erupt it is too much at this point.
gpt
Supervolcanoes erupt differently from more conventional volcanoes. In a conventional volcano, the pressure builds until the rock above can't contain it, and it explodes. In a supervolcano, the magma chamber expands like a balloon, until it "pops" and the roof collapses into the chamber. It is almost (but not quite) like a really big splash.

Edit: That means that as the magma chamber gets bigger, it is *more* *likely* to erupt, because the roof gets weaker.