Exactly. I assumed that meta-ignorance would be about not realizing that not having the information about something is making you ignorant, but instead the author just gives examples of being ignorant. It's kind of ironic actually.

But the ignorance anedoctes he tells all follow some ignorance patterns. Metaignorance should be described by these ignorance patterns: the context, the problems and how their solution will be missed, the ignorant rational. These ignorance patterns are distinguished from anti-patterns as they describe the process by which the solution is missed instead of the erroneous solution.