Father and Son is definitely the most silly question on the earth.
However, anyone who answers Father comes first followed by Son is the actually the one who is the most silly person on the earth.
Now I think may be Nagarjuna has nothing to do as well, so he used Father and Son to explain why the source of 6 consciousness, which we feel so real, cannot exist.
I want to use his analysis and logic to share that point by not directly telling the answer.
Since I see his explanation is purely logic and has nothing to do with difference of school, I feel I may want to share.
However, I also feel that there are too much suspicious about me, which may appear silly.
People will not appreciate it, once they are suspicious about you.
In this case, let's close these three links.
Also lost interest already.
Let us have a drink and popcorn.
In case some of you want to study about it, you may search google on how Nagarjuna used Father and Son, this most silly question, to explain why 6 sources of consciousness cannot exist, something which I think quite complex.