Ikea is funny because it has "shortcuts" all over the place where you can bypass larger chunks of the full path. You just need to look for doorways outside the main path. Also because most (all?) it's stores follow a very similar layout, so once you've been to one, you'll find the shortcuts in the others very easily and know pretty much exactly where you'll end up. They've just made the obvious path simple enough to mindlessly follow that most people do.