The source code is very straightforward too. Commented out sections of the website with dated reminders to uncomment them. I guess he must look at his source code frequently enough that these reminders work? Very simple but effective mechanical turk I guess? e.g. It's the Grav-Mass season! Grav-Mass is the celebration of physical laws. December 25 Isaac Newton's birthday. ¡Feliz Gravidad! -->
If he doesn't have a script that can update the website using those date notes, he is dishonoring his Unix heritage
That particular bit isn't scripted (I just haven't gotten around to write a script for it) but a bunch of other things are the site are done with perl scripts.