How Many Pieces of Space Are in This Room?

In the metaphysics, it's about substance. So how many pieces of space are in the room i'm sitting in? Heren si aristottle tells us, no definite number. It's potential. You can cut up the room however you want. How many units of time are in this podcast? No definite number. Cut un of the way yo want. But then why is mind separate enough from the whole in the first place that it can do that? Why not distinguish between things in everything else? Writer,. so that's my objection to the other objection i have to it is that it always has this perpetual air of novelty but it's been going since bergson's time