Think of a 3-dimensional object (unlike a surface, which is 2-dimensional, regardless of the shape), with the volume zero. That's not easy to wrap your head around.
I don’t see why it would be hard. Surprising, maybe, if one never thought about a limit of iterative processes.
> That's not easy to wrap your head around.
I am trying to figure out the formal version of this topological conjecture. Even that isn't easy.