Genes dominate or belief?
It's an interesting topic that asks the question. The story is beautiful and gripping. Player performance is good.
However, a theatrical episode could have been made for the splendor of the subject. Could have been a more solid story.
The beauty is that even separate plots and chapters can be extracted from Svu's scenes.
The special reason that connected Olivia to Svu was not reminded for a long time. This situation of him was talked about and discussed a lot in Stabler's time. But the new Svu was also not mentioned after William Lewis. His brother's case seems to have disappeared altogether...