[spoondan]

It's the difference between "do" and "should". He's saying the book claims to explain human behavior; it doesn't recommend or justify that behavior.

[hartror]

Yet others are using it to recommend and justify the behavior.

[spoondan]

Sure, but I don't think your complaint is with the book. You can't blame the evidence for the case the prosecutor makes.

[hartror]

Point taken, given I haven't read the book I assumed the book made the same conclusion that was being forwarded on this thread.