How would Tohno Shiki be able to enter his TARDIS (i.e. a knife) when the entrance is several times smaller then he is? * The entrance is full-human-sized, its just as small as a knife-blade. I assure you, it makes perfect sense in twelve dimensions. * The Doctor Who Expanded Universe has a Spaceship Girl TARDIS. Somehow she kind of opens up to form a decent-sized entrance, so people her size or bigger can walk right into her. It's in-universe High Octane Nightmare Fuel. So, the upshot of this is that probably the knife would not, when opened up, look like a knife. * The same way you can step through a hole in a postcard. (If you don't know how to do this, look it up). * More Nightmare Fuel when you realize it involves cutting it up. * If you were to open a hole into th