Yeah, I was referring to that thread. Without explicitly stating what's wrong with the study (in which many factors could go wrong), Or stating how/why environmental factors could still derail the study despite twin control, the twitter thread derails into "social responsibility" etc.

I have a political bias towards the left (equality, more democratic control etc), but I would never say scientific truth should be subservient to my ideology. That kind of a view has a huge stench of the postmodernist ideology on how even science is subjective like literary criticism.

Any ethical axiom is cannot be contingent on facts due to the is-ought problem (https://en.wikipedia.org/wiki/Is%E2%80%93ought_problem). But the moment some the moral axioms are used to make decisions in the real world, the decisions have to be consistent with the axioms. The effect of decisions is contingent on facts aka Science. So given a belief in induction, science can help inform what you "ought" to do with respect to your axioms.

Contrary to the subset of people in the left who blindly believe the Blank Slate hypothesis, or fear that genetic studies will change their ethical assumptions, I argue that more knowledge (genetic, sociological etc ) through science would only help you to be more committed to you ethics by allowing you to exercise it properly. I think Steven Pinker's argument against (part of) left's obsession with blank slate rings true https://www.ted.com/talks/steven_pinker_chalks_it_up_to_the_...

I think Peter Singer (of Animal Liberation fame) alludes to the same point in the Darwinian Left https://en.wikipedia.org/wiki/A_Darwinian_Left (haven't read it yet)