As a former instructor of the S8G prototype, in lovely Ballston Spa NY, I would have to say that the system is most definately a pump. It was hard for us to even propose that we get rid of any of the dumb kids, let alone ones that somehow managed to survive to week 24. As an example -
The legend of the Soup Pirate.
So, there I was, it was a cold, harsh winter, and the snow storms managed to knock out the power. A student that ended up in my section decided that during the cold, she wanted to warm up with a nice warm can of soup. Now, normal people take the soup out of the can when they heat up their soup... not the Soup Pirate. She slapped that can of warm delicious broth on the stovetop and turned it on. A few minutes later, Soup Pirate decided it was warm enough and turned the stove off. Now, comes the tricky part. Opening the can of soup.
Yep - you guessed it. IN THE FACE!!! The scalding hot soup expelled from the canister into her face and gave he second degree burns to her eyelid, and the good ol' clinic gave her a complimentary eye patch.
She is now a qualified member of the Surface Fleet.....