Blaise Pascal was a French mathetician, (Pascal's triangle), and philosopher (Cogito, ergo sum) who dabbled in science to keep busy.

His most famous pronouncement in science states: A change in pressure at one point in a fluid will cause the same change in all parts of the fluid. We should note that the fluid must be non-compressable.The fluid could be water or toothpaste in a tube or hydraulic fluid.


  This derivation suggests that work in equals work out. This is good.