Permalink Submitted by Chris Miller on August 31, 2018

We should always bear in mind the wise words of John von Neumann (1903-57):

"If you allow me four free parameters I can build a mathematical model that describes exactly everything that an elephant can do. If you allow me a fifth free parameter, the model I build will forecast that the elephant will fly."

## Mathematical models

We should always bear in mind the wise words of John von Neumann (1903-57):

"If you allow me four free parameters I can build a mathematical model that describes exactly everything that an elephant can do. If you allow me a fifth free parameter, the model I build will forecast that the elephant will fly."