This one is definitely more of a 1.5 than a 2 out of 5, but I'm rounding up because I didn't finish it and, for all I know, the second half of the book could possibly end up more interesting. For me, the first half was just too much of a chore to get through and, aside from a general curiosity I hold about 1950s speculative fiction and Damon Knight's work (i.e. IIRC, I've enjoyed a handful of his short stories), very little about the book was holding my attention. For me, the biggest issue is that, for a story whose main themes are human psychology and behavioral conditioning, the author doesn't spend any time exploring the characters' internal lives, instead focusing all of his creative energy on world-building, action sequences, and behind-the-scenes espionage, all of which are also presented with very little clarity. What results is that our main character, Arthur, just kind of bounces from one bizarre dystopian scenario to another and, along the way, acts out in ways that just come from nowhere and go nowhere.
To be sure, the first section, where we meet Arthur going about his day-to-day business in his home region, has a mostly-coherent sequence of events. Where things really fly off the rails is in the section that follows, when Arthur leaves that region and ends up in a neighboring region with a completely different societal structure. Within a space of around twenty pages, he meets the female lead, wins a paintball match with her (albeit after shooting her right in the face), stands around while she gets in a state-sanctioned 'whip duel' with another lady over who gets to hang out with him, throws a rage tantrum and knocks her unconscious at some other facility, starts a riot in a crowded area, goes on the run and, unless I misread everything, sets a whole city block on fire in an attempt to out-maneuver the authorities.....? Then, in the following chapter, he's suddenly whisked off in a helicopter to some strange college and getting scolded by a prefect for not making his bed properly. At this point, I had to tap out.
Sunk-cost hangups might find me finishing the last five-or-so chapters of this one at some point, but I'm quite certain that the book's just not worth the struggle.