2011-02-02, 03:01 AM
A thought came to me the other day, and I couldn't really wrap my head around it fully, but it went something like this:
A person finds themselves in possession of two doors, both of which are connected in that when you enter one, you exit the other (with attention to facing) so that your back will be facing the second door when you step out of it. These doors are contained within their frames, only open outwards, are easily moved, and it doesn't matter which door you enter first; you can enter either door and you'll step out of the other door with your back facing it.
If a person were to set the two doors next to one another, but have one set upside-down, so that the front of the first door and the back of the second door were touching, what would happen if a person were to walk through the door?
A person finds themselves in possession of two doors, both of which are connected in that when you enter one, you exit the other (with attention to facing) so that your back will be facing the second door when you step out of it. These doors are contained within their frames, only open outwards, are easily moved, and it doesn't matter which door you enter first; you can enter either door and you'll step out of the other door with your back facing it.
If a person were to set the two doors next to one another, but have one set upside-down, so that the front of the first door and the back of the second door were touching, what would happen if a person were to walk through the door?