ezyang’s blog

the arc of software bends towards understanding

Ad hoc approximations

In his book Against Method, Paul Feyerabend writes the following provocative passage about ‘ad hoc approximations’, familiar to anyone whose taken a physics course and thought, “Now where did they get that approximation from...” The perihelion of Mercury moves along at a rate of about 5600" per century. Of this value, 5026" are geometric, having […]

  • February 23, 2011