<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;

String diagrams would be useful in category theory, except they're unreadable due to being curled up in tiny dimensions. Taneb invented them anyhow.