I think of myself, and enough other people have considered me, as having been (at least some of the time) a 10x programmer. And yet: one afternoon (many years

I think of myself, and enough other people have considered me, as having been (at least some of the time) a 10x programmer. And yet: one afternoon (many years ago) I came in to work, and my boss called me into his office. He was holding a copy of Time magazine, and looked angry. "Page 23." Woops! The border around the picture at the bottom was glitched. Turned out to only occur for pictures with vertical line count of the form 4n + 3: even line count or 4n + 1 were fine. Luckily, the bug had been noticed before millions of copies had been printed. "The only reason you still have a job, is that the compression routine you added let Time push back their photo deadline by a full day." [I believe that at the time, the communication between their headquarters and their regional printing plants was over 4800 bps leased lines. Note that the compression routines achieve ~50% lossless compression, looking at only one scan line at a time (core was tight in those days: some of it even was literally core).]