My biggest takeaway is that they nowhere address address the fact that correlation is not necessarily causation. Yes, our childhood affects who we become. But it is not the only thing that affects it. For example

Two giant factors come to mind. Genetics and racism.

Consider one genetic factor. I have ADHD. That means that it is extremely likely that one or both of my parents had ADHD. (My father, certainly. My mother, maybe. She certainly had a genetic propensity for depression that her children struggle with.) This resulted in an unstable family home. Unsurprisingly this resulted in me falling into their adverse environment category. As an adult I've done reasonably well. But yes, my challenges have affected my children. But were those challenges because I grew up with horrible problems? Or was it because I have a well-known genetic condition that causes challenges?

On genetics, I highly recommend https://press.princeton.edu/books/hardcover/9780691190808/th.... GWAS studies can only tease out genetic correlations for European Caucasians. Part of that is that they can only be done with a lot of data from somewhat related people. And part of that is that with Caucasians it is reasonable to assume that bad results are due to personal characteristics, and not racism.

But we can do it for Caucasians. And so we can know for Caucasians that the impact of genetics is about as strong as the impact of socioeconomic status. We can also separate the effects of things like the effect of when you first had sex from the genetics that make you first have sex early or late. That one is fun, because it turns out that the genetics matters a lot, and when you first did it only matters because it is correlated with your genetics. We can look at the impact of reading to kids. Yeah, that's pretty much genetics as well. We put a lot of effort into getting kids read to more, and didn't get demonstrable results for it.

So you see, understanding the impact of genetics is very important for what public policies are likely to work. They tell a great just-so story. But I'm not convinced.

Moving on, what about racism? They trace the story of Alex. Hispanic. He had a terrible upbringing. Which could be caused by the impact of racism on his family. He had a terrible adulthood. Which could be caused by the impact of racism on him. He's just as good an example for "racism sucks" as he is for "adverse childhood sucks". Which is it? We don't know. What should we do about it? That's still an open question!

And finally, let's look at personal responsibility. I don't agree with condemning poor people for being poor. But suppose you are born in whatever circumstances, with whatever genetics. What's the best way to improve your life? Judging from my experiences and understanding of human nature, it is to encourage an attitude of personal responsibility. Don't worry too much about what's outside of your control. Focus only on what's in your control, and try to do the best that you can.

Ironically, this matters more when the deck is stacked against you. If you have family background and racism are holding you back, you can't afford the third strike of a self-destructive attitude. But if your background and race give you resources, your attitude probably doesn't hurt you as badly.

Does "personal responsibility" make for a good social policy? No. But should we encourage people to individually embrace it? Absolutely!

I strongly disagree with their cavalier dismissal of the idea.