A tire that already has a hole in it, it won't bump up. the pressure won't increase. the same with this rig. >> and let's go through that. i was told today they're going to take this slow on purpose because of their concerns of causing a big rupture down here. i was told when they close these down, they want to take the pressure up maybe to 6,500 psi. then do seismic readings. and then if they feel good, go higher to ultimately where they think they need to be. 83,900 psi to cap it, letting the pressure come up here. what's the significance of the difference? >> the thing is dynamic. this is t...