[cateye]

Jewish people to be more capable of thinking in abstraction

Do you have any proof for this? Is there a "world championship abstract thinking" tournament that we have never heard of?

Jews are so over-represented in contributions to science

This might be maybe a little bit better measurable. But the question would be: is that because they are Jew or are there other factors?

[gxon]

To the first point, I'm not making that argument. It's my interpretation of Freud's argument described in this article. Do you think I misinterpreted it?

To the second, I understand this to be fairly well established, at least in modern times. For example, Nobel laureates are massively over represented by people of Jewish descent [1]. Freud's argument here just seems to be yet another theory for why this might be.

1. https://en.wikipedia.org/wiki/List_of_Jewish_Nobel_laureates