Single proof why the Ashkenazi Jewish intelligence may be genetically given

I recall the old article about Ashkenazi Jewish intelligence on Wikipedia. You couldn’t have thought out more variations of how things were and could have been.

The aforementioned article no longer exists but the notion of Ashkenazi intelligence is still here.

No doubt little Ashkenazi Jewish children live in more than a pushy culture. But let’s look at East Asians. Their culture is extremely pushy. So is the Jewish culture even more pushy? I would seriously doubt that.

Or are East Asians less prone to environmental factors? I don’t think so. So the idea that Ashkenazi Jewish intelligence is genetically given is quite plausible. Maybe exchanging Asian children with Ashkenazi families and vice versa would make things clear.

The other explanation is that East Asians have genetically lower intelligence and their pushy culture saves it all.