Hopefully, it's inefficient. Alastair is one of the smartest people I've never met and has played an important role in my Bible reading in the last few years by turning me onto some pretty amazing Bible teachers (even if they're Calvinists).

His post reminds me of a line from Alan Jacobs' book The Pleasures of Reading in an Age of Distraction:

If most of us read too fast, most of us also read too many books and are unwisely reluctant to return to something we think we already know.