n=12 books, 41 distinct recommendations counted, 9 of them mutually exclusive.
The plan was to read twelve productivity books and count what they actually tell you to do. Not to evaluate them — to tabulate them, the way you would tabulate anything that claims to be a system.
A recommendation counted if it was stated imperatively and at least once outside a chapter summary. Anecdotes did not count. "Consider whether" did not count. This is stricter than it sounds and it removed about a third of what felt like advice while reading.
Forty-one distinct recommendations across twelve books. Eleven books recommend waking up earlier. The twelfth is about sleep, and recommends waking up earlier, on a consistent schedule, which is the same instruction wearing a lab coat.
Nine pairs are mutually exclusive. Three books instruct you to batch your email; two instruct you to handle each message once, on arrival. Both positions are argued from first principles, and neither book acknowledges that the other exists.
A genre in which every entry is a complete system, and no entry cites another, is not a field. It is a set of parallel universes with a shared cover designer.
Two of the twelve are worth your time, and both are worth it for the same reason: they are the only ones that state a condition under which their advice would not apply. Everything else is unfalsifiable, which is the genre's defining feature rather than an accident of any particular author.
The full table of forty-one recommendations, tagged by book and by whether anything contradicts it, is in the linked sheet.
More from Corpus