Death Note style "I know that you know that I know that you know that I know..." style bullshit that falls apart
yeah if you didn’t like that part of death note (which i guess would be another of your responses to this question) you definitely wouldn’t like that plot line, which PSA to other commenters takes up about 1/4 of the second book. (i’m also curious to hear why you think it falls apart and debate it though i presume you wouldn’t be interested in debating this book lol. i liked the plotline partly because you also have to deduce what he’s going to do and going on through his mind)
awful solutions to the Fermi paradox
the Dark Forest Hypothesis has been around and proposed by physicists decades before the book popularized it, though not with that name; it is plausible that Liu independently thought of this. Stephen Hawking is a major proponent of this hypothesis.