The power of equations lies in the philosophically difficult correspondence between mathematics, a collective creation of human minds, and an external physical reality. Equations model deep patterns in the world. post
<img src=http://c2.com/wiki/world-changing-equations.jpg style="width:100%"> <center><a href=http://c2.com/wiki/world-changing-equations.jpg target=_blank style="font-size:small; text-align:center; color:gray;">enlarge</a>