Yeah like someone said, the universe is infinite, it's just a never ending matter, how is that supposed to be contained? What could possibly hold something infinite? Anyway another thing, if we really were in the matrix, doesn't that mean there would be a way to get to the "other side", I mean if you watched the movie, they were in the matrix, and then able to get out of it, so maybe there is a matrix, but I HIGHLY doubt we're inside of it.