[tptacek]

Right, so my meaning here is subtle: that it makes a problematic subject for a book intended to have a clear protagonist, not that Katsuyama is a bad person (I don't know anything about them beyond the book).

[yellowstuff]

Gotcha. I agree that the main premise of Flash Boys was wrong, HFT is unambiguously better for retail traders than the market makers that preceded it.