On Friday, a retired software engineer named Martin C. Martin announced that he recently discovered a bug in the original Lunar Lander computer game's physics code while tinkering with the software.

I first played this game, via a teletype machine, in the early 70’s on a HP2000(mini? Mainframe?) running HP Timeshare BASIC. The code was in BASIC of course. I’ve no idea if it was a port, or a ...