Bogie: Sorry, Bogie, I erroneously attributed to you a remark that I should have attributed to Didly. Sorry.

Didly. Please note that it was to you that I intended to address my remark about three versus two dimensions. Your remark was:

Visit the funfair centrifuge.Stand against the wall.Spin it up to a very high speed.
Now stand up at right angles to the spinning wall.Can't?.You are squashed into two dimensions.
A rubber wall would have dips (warping)where the mass is.Masses roll or slide into each others dips.The
masses move together and appear to attract each other.Thats the two dimensional equivalent of gravity.

My intended response was:

Also, you seem to think that compressing a three-dimensional object can make it two-dimensional. Not
true. No matter how thin you make a sheet of paper, it's still three-dimensional. A valid example of a two-
dimensional object is a shadow: It has no thickness at all.