A: It's not a hole in the wall, nor a hole in the ground. It's actually a shortcut through space-time, like a cosmic slide.
A: Because, math. Don't worry about it, just trust us, we've got this.
A: Only if you're a physicist with a time machine and a bad sense of fashion. Otherwise, stick to the timestream.
Read more about wormhole travel for the daring and the dim-witted.
Safety tips for wormhole travelers because, you know, safety first.