Suppose someone is a relatively well versed professional but they have a hole in their understanding…They don’t know X - where X is HTTP verbs or linear algebra

Suppose someone is a relatively well versed professional but they have a hole in their understanding…They don’t know X - where X is HTTP verbs or linear algebra or Assembly or the difference between Java and JavaScript or how to write vanilla JavaScript in general… it’s very likely that those skills are immaterial to their job. It’s also very likely that they will never need those skills. All of computing is layering abstractions and no one - no one - understands all of them. The author cherry-picks their own favorite layers as being “what kids these days don’t understand” while ignoring their own ignorance of other layers. One does not need to understand alternating current in order to plug in a vacuum.