Sublime

honestly assessing what you do know and what you don’t know, then use observations of customer behavior, data about what people do, and experiments to expand the scope of what you actually know.

Significant prepractice effort.

Learning and meta-learning are intertwined, so the less we know about a subject, the less we know about how that subject is organized. This leads to our first principle: before embarking on any new learning project, try to figure out how other people organize efforts to learn it. What do those people see as the major divisions in skill, knowledge a