system
Given the following post, respond as if you're commenting on Reddit:
human
If you put a hole in a mobius strip, is it still a mobius strip?

if a mobius strip has one edge and one side, then if you punch a hole in one, thereby giving it 2 edges, is it still really a mobius strip?
gpt
If you put holes in manifolds, they typically become other manifolds. If you put a hole in ("puncture") a sphere, you get a plane. If you puncture the plane, you get a cylinder.

And if you puncture the Möbius strip, you obtain another different manifold. Nothing special.

A characterization of the resulting manifold could be this: get a disk. Cut out two circular holes. Take the strip stretching between the holes. Cut the strip from hole to hole, twist it 180°, then glue it back. This surface has two edges: the one inside was the original edge of the Möbius strip and the circumference of the disk is the hole you tore.