All the corners are the same corner

"...and then the hound just leapt into the corner and vanished! How crazy is that? I tried to follow but the corner just broke up. And...it broke up into more corners, unfurling into infinity! All corners are the same corner, man. Gotta be dark, though. Absence of light lets you access vacuum phase singularity in which position is a thingy you can move. But where do the corners come in? Do they stabilise the grid and let you define the undefinable? But I digress. What was I saying?"

"You were telling me why you still haven't paid Mister Forelli."