[Aliantha]

To answer you in your own language tw, the parents have not addressed issues with cognitive development, possibly (probably) because they've never reached stage 4 themselves, and so are unable to reason properly to find a better answer than the one that's not working.

For example. I developed parent might look at the circumstances they live in and think to themselves, "Hmmm, this is not the ideal environment to raise my child in. Maybe I should think of a way to improve our lives a little by using the education system (or something like that)", where as a stage 3 might say, "Hmmm, this is not the ideal environment to raise my child in. Who's fault is it?"