It's almost exactly a rubber sheet with balls placed upon the surface. The weight of the balls creates depressions in the sheet. This is it really, except for t

It's almost exactly a rubber sheet with balls placed upon the surface. The weight of the balls creates depressions in the sheet. This is it really, except for two extra things: 1:When the balls are removed, the sheet slowly returns to flat. 2: The sheet isn't 2 dimensional but has as many dimensions as the input vector.