Caedes, point well taken but it is a language issue, in short terse sentences, only the bare essentials of a thought are expresses. When I mean gravity-neutral, I talked about the effect inside an onion-like layered entity. If you
Follow the the graph line of the strength of the gravitational pull from the maximum at the surface (if any) to the zero at the center, one realises there is a steady or incremental decline. This means that the layer above, like layers down a mine shaft have CRASED to contribute to the strength of the downward pull. how otherwise could the force have declined? It follows that if the inner layers of your choice could be removed, there would be no gravity force left. (sic)
in other words no acceleratin in the center of earth and less acceleration in a mineshaft. Also no acceleration inside a hollow sphere. Hope that clears something up. (sic)
If you were in a shaft leading to the centre of the earth your acceleration would be at a maximum at the surface and would gradually reduce to zero at the centre. Your velocity would start at zero at the surface and increase until you reached terminal velocity (assuming there is air in your shaft of course), you would then travel at that velocity until you got to the centre. Once past the centre your velocity would decrease as gravity started to decelerate you. Eventually the gravity would reduce your velocity to zero and then would start accelerating you back towards the centre. Hence your velocity would still be at it's maximum when you go through the centre.
So Bohm is correct, however Prologos, you are still forgetting the scenario you are actually discussing, the earth is still at the centre. Your water canopy is not gravity neutral because it can't be considered on it's own. The fact that the earth wouldn't feel any gravity effects from the water canopy does not make the canopy gravity neutral, in fact the water canopy would very much feel the effects of it's own gravity along with that from earth.