So, the answer to 'genetic determinism' is simple. If you want to change behavior, just change the environment. And, of course, to know which changes would be appropriate and effective, you have to know those Darwinian rules. You need only to understand human nature, not to change it. Margo Wilson's and Martin Daly's classic work on homicide illustrates this very clearly.
Homicide rates vary enormously across different societies.
And that shows up very dramatically when you look at the patterns of the murders. Although the rates are vastly different, the patterns are exactly the same. What makes the difference to the rates is the different environments. And that's crucial for policy. And that tells us what conditions we'd need to create to lower the murder rates.