Tuesday, May 27, 2008

Great fleas have lesser fleas

I love this poen by Augustus DeMorgan, all about orders of magnitude:

Great fleas have little fleas upon their backs to bite 'em,
And little fleas have lesser fleas, and so ad infinitum.
And the great fleas themselves, in turn, have greater fleas to go on;
While these again have greater still, and greater still, and so on.