Spoiler spoilers. Thoughts on the Divergent series.  My beef:
1. The basic premise is scientifically unsound. Personality is
not a simple dominant-recessive binary trait, it is made of of
myriad of different factors, both genetic and environmental. To
definitively link a personality trope with susceptibility to a
drug? To say that the same drug will work on A, B, C, D, and E
individually but not at all on ABCDE, which is just a
combination of the above? Especially when each “trait” is so
ambiguous and multifactorial? Just, no. I think reality is a bit
more like this, a melding of different combinations of the same
underlying units. Bioengineering/medical brain is inwardly
cringing. Also doing a DNA test by injecting stuff into you
instead of taking blood out, why the heck would that ever be a
good idea!?  2. Just like Hunger Games but worse. With less
convincing character development and a TON more fluff.  3. Tris
and Four please stop making out every other page. Oh my frickin’
god. It was eye-rollingly mayb