Bedtime Story

The pink stuff gets pushed through these pipes.

It pushes on this thing.

Then it moves this thing.

But if it doesn't get pushed hard enough then the same thing can be moved by this blue stuff.

But the blue stuff doesn't really move it.

Really the blue stuff pushes the pink stuff which still moves the thing.

But, if the pink stuff leaks out then you can't move the thing.

Except some things can be moved by stored pink stuff and some things can be moved by either blue or pink stuff.

Lots of blue and pink stuff runs through the plane.

Lots of stuff moves. There are lots of ways to move lots of stuff.

The end.