Content Depth
In one sentence
Whether a subject is covered thoroughly, including the parts a beginner would not think to ask about.
Analogy Mental model
Digging a well. A shallow scrape finds dust; the water sits further down than most people are willing to go.
In practice What you actually do
Read the current number one and find what it does not answer: the counterexample, the cost, the case where the advice fails, the number nobody published. Depth is mostly willingness to include the inconvenient part.
Where people get burned Pitfalls
Length is not depth. Five thousand words circling one idea is shallower than a thousand that include the exception, the price and the failure mode. Density is what a reader feels.
This entry was written in English from the Chinese original, not machine-translated. Read the Chinese version →