If it's not practiced constantly, it will not work. People will forget how it's done [1], and it will be a lost skill within a few years of completing high school. Couple that with the fact that most people would rather take the easy way out instead of thinking harder about problems and information, and we're back to square one: a population that struggles to think critically.

[1] https://www.cbc.ca/radio/costofliving/let-s-get-digital-from...