Gravitation is an etheric--magnetic vibration akin to the force which holds, to use your simile again, Drake, the filing against the magnet.

A walk is a constant breaking of the current.
"Take a motion picture of a man walking and run it through the lantern rapidly and he seems to be flying.

We have none of the awkward fallings and recoveries that are the tempo of walking as we see it.
"I take it that the movement of these Things is a conscious breaking of the gravitational current just as much as is our own movement, but by a rhythm so swift that it appears to be continuous.
"Doubtless if we could so control our sight as to admit the vibrations of light slowly enough we would see this apparently smooth motion as a series of leaps--just as we do when the motion-picture operator slows down his machine sufficiently to show us walking in a series of stumbles.
"Very well--so far, then, we have nothing in this phenomenon which the human mind cannot conceive as possible; therefore intellectually we still remain masters of the phenomena; for it is only that which human thought cannot encompass which it need fear." "Metallic," he said, "and crystalline.

And yet--why not?
What are we but bags of skin filled with certain substances in solution and stretched over a supporting and mobile mechanism largely made up of lime?
Out of that primeval jelly which Gregory * calls Protobion came after untold millions of years us with our skins, our nails, and our hair; came, too, the serpents with their scales, the birds with their feathers; the horny hide of the rhinoceros and the fairy wings of the butterfly; the shell of the crab, the gossamer loveliness of the moth and the shimmering wonder of the mother-of-pearl.
* J.W.Gregory, F.R.S.D.Sc., Professor of Geology, University of Glasgow.
"Is there any greater gap between any of these and the metallic?
I think not." "Not materially," I answered.

"No.