| Imagine lying on a surface
that senses exactly how far to
let you "sink in" so that every
point on the contour of your
body is supported. When you
are not on that surface, it then
"flows" back to its original,
flat shape. This phenomenon is
similar to pushing your hand
into the surface of a bowl of
water and feeling the water flow
to fill every contour and curve
of your hand, then return to its
original shape once your hand is
removed. |
