The author explained a very useful analogy (reading : comprehension = writing : composition = coding : modelling) but didn't push it as far as he should. The im

The author explained a very useful analogy (reading : comprehension = writing : composition = coding : modelling) but didn't push it as far as he should. The important thing about coding as modelling is that the results are not just external to the author's head, they are formal models that automatically infer or do things. The other way to do that - in one's head and via his actions - simply doesn't scale beyond a point. Historically the ways people scale such models are human organisations. That's why IT is so exciting today: not only it helps an individual think, it helps groups organize at scale that wasn't practical before because of the friction inherent in implementing formal models in people's heads.