This isn't true in practice. Even among well educated high performing professionals, mistakes happen. Checklists save lives - in medicine, in aircraft maintenance, in all fields.

People who believe they know what they're doing get overconfident, move fast, and make mistakes. Seasoned woodworkers lose fingers. Experienced doctors lose patients to preventable mistakes. Senior developers wipe the prod database or make a commit they shouldn't.

https://hsph.harvard.edu/news/fall08checklist/

>In a study of 100 Michigan hospitals, he found that, 30 percent of the time, surgical teams skipped one of these five essential steps: washing hands; cleaning the site; draping the patient; donning surgical hat, gloves, and gown; and applying a sterile dressing. But after 15 months of using Pronovost’s simple checklist, the hospitals “cut their infection rate from 4 percent of cases to zero, saving 1,500 lives and nearly $200 million,”

Aye.

I made shameful mistake of submitting private key (development one so harmless) only because it wasn’t gitignored and prehook script crashed without deleting it). More of a political/audit problem than a real one.

I guess I’m old enough to remember Murphy Laws and the one saying "safety system upon failure will bring protected system down first".

It's crazy how many people don't know this, despite it being fairly obvious.

I guess it's hubris. I don't make stupid mistakes. You see it a lot in discussions around Rust.