Just the other day I was watching a video on youtube, of someone absolutely struggling at a task that had a built-in checklist, verification steps, pictures, and basically (in my opinion) perfect guidance. This is something where, if I was doing it, I would just... do the steps. in order. and it would work, probably... 99.9% of the time, the first time, and relatively quickly, to boot.
I watched them fail to succeed like... 5 times in a row. At no point did they actually complete all the steps and verification in order. And this was a reasonable, intelligent, thoughtful, thorough person. They just could not follow a checklist, visual or written instructions, probably to literally save their life.