<wob_jonas> perl -eopen$i,"<",($f="wisdom/aristotle");$_=<$i>; s/two thousand/2000/ or die; if (1) { open$o,">",$f; print$o $_ or die; } print substr$_,0;

Burritos are like Monads, according to Joe. See https://byorgey.wordpress.com/2009/01/12/abstraction-intuition-and-the-monad-tutorial-fallacy/