Looking at Figure 5, I'm reminded of a distinction I like to make between "cookbook" instruction and "textbook" instruction. The former is like the top of the f

Looking at Figure 5, I'm reminded of a distinction I like to make between "cookbook" instruction and "textbook" instruction. The former is like the top of the figure: everything is fully in context, but also everything remains implicit, and it's up to the reader to suss out* the principles given a bunch of examples. The latter is like the bottom of the figure: major things are pulled out of context, explicitly so that their principles can be communicated, noninductively and clearly. * That which thy fathers have bequeathed to thee, earn it anew if thou wouldst possess it. — JWvG (as quoted by ISR)