@WandererUber We can agree to your examples, although it would imply that the men who fought in WW2 would have to be cowardly, because the brave men died in WW1, which is not really true. There is plenty of possibility for a cowardly parent to have a brave child.

I am generally one to emphasise nature over nurture, but not to the same degree as you. Things like values and preferences can be instilled in a lot of people, it is not entirely genetic.