579
I think I see the problem with our education system
(startrek.website)
General rules:
Exceptions may be made at the discretion of the mods.
I would argue that we have to be constrained by what is actually shown by the illustration and what is implied by it. It is implied that they all work together at the same time and if we're just making up things that aren't shown like an extra plane, we can make up anything.
A planetary gear set would have illustrated the point without breaking the laws of assumption.