On-demand learning is popular because the general quality of documentation is awful due to mismatched incentives and rapid changes in the tech industry. Progra

On-demand learning is popular because the general quality of documentation is awful due to mismatched incentives and rapid changes in the tech industry. Programmers quickly learn that the presence of good documentation cannot be relied on, and bad/outdated documentation is worse than no documentation. This is a very different paradigm from traditional schooling where almost everything is built on mostly reliable documentation (i.e. carefully curated textbooks).