I once spent $299 on a course I never watched. Not because I needed it. Not because I researched it. Not because it fit my learning style. I bought it because I saw “47,329 students enrolled.” My brain did the math: “47,000 people can’t be wrong. This must be good.” Spoiler: It wasn’t good. For me, anyway. The content was basic, the pacing was wrong, and I could’ve learned the same material for free. ...
I once rejected a brilliant engineering candidate because their resume had a typo. Not in their work history. Not in their technical skills. In the summary section: “atention to detail” instead of “attention to detail.” My brain went: “Typo → careless → probably writes buggy code → not a good hire.” I passed. Another company hired them. They became a principal engineer there and later gave a keynote at a major conference. ...
A critical bug crashed our production system at 2 AM. Slack notifications went out to the entire engineering team—thirty developers. Nobody responded. Not for 45 minutes. Everyone saw the alerts. Everyone assumed someone else would handle it. After all, with thirty people notified, surely someone more senior, more experienced, or more available would jump in. When I finally woke up and fixed it, I found out that seventeen people had been awake and seen the alert. Each one thought, “Someone else will get this.” ...