Interesting to see how this post is being sent back to the second page even though it has 43 points in 4 hours. In front are posts with 12 points in 5 hours.
Using proxies for competence is a slippery slope towards misdirection and irrelevance - and as a result, incorrect hiring decisions.
In another thread today, someone mentioned they reject every CV that has two typos or more. It's a proxy, and it is irrelevant for the job.
Once you start going down the path of proxies, you add more and more far removed ones. To keep hiring performance high, resist adding the first proxy. Actually ask questions relevant to past work experience that maps to the actual job. Maybe do work samples.
To circle back to the two questions in the blog post, no interviewer can answer them because they use proxies too far removed.
Everyone is bad at changing themselves. A company is a system where the individual parts are people. Systems are built with a purpose. Changing the system means changing the purpose, often requiring exchanging old parts for new and completely revamping the system.
Creating vision for this re-design requires distance which most CEOs don't have as they are too embroiled with the day to day maintenance of the existing system, by definition.