Comment by throwanem

I once reimplemented in Perl Nethack's logic for phase-of-moon and Friday 13th computation and notification, and added the resulting cute little script to the root .profile on our consulting firm's main web hosting boxes.

I didn't get fired when my boss found it by surprise a couple months (and lunar cycles) later, but I did learn a valuable lesson about how one may wisely limit one's exercise of whimsy.

Google took a few years more to achieve the same discovery, as I recall, but presumably this has to do with pedagogical methods involving not as many ex-sergeants.