Right, sometimes called "square-cube law" (http://en.wikipedia.org/wiki/Square-cube_law http://en.wikipedia.org/wiki/Square-cube_law). Worth knowing about so y

Right, sometimes called "square-cube law" (http://en.wikipedia.org/wiki/Square-cube_law http://en.wikipedia.org/wiki/Square-cube_law). Worth knowing about so you can explain to yourself the differences noted above.