Re: Native speakers do engage in a kind of grammatical computation.

Hi. Thanks for coming to our bulletin board with such
an interesting point! You do hit the nail right on the
head there. ~Ccongratulations!! You must be doing
extraordinarily well for a university student!!!

〉Hi, I'm a university student. I came across this HP. I found your HP’ s discussion interesting and stimulating, so I’d like to join the discussion.

Seeing that you have read the bulletin board written
entirely in Japanese, I cannot help wondering what an
amazing liguisit you are!!!! Let me congratulate you
yet again!!!!!

〉Whereas some linguists proclaim that humans have innate abilities to acquire language which other animals don’t have, and that language acquisition is the process of switching one’s brain into the target language, others say that language learning is done only through imitations. Which claim do you agree with?

Very good point. That is precisely where this site
is all about, isn't it? And the answer is...

No, actually I believe the answer should be self-evident,
since you can read Japanese so well obviously.

〉Note the former insist that the differences, as shown in the following, are difficult to distinguish and acquire only through imitations and memorizations and by general reasoning abilities.

May I, before going on to my comment, suggest that
'acquire' in the second line should read 'the ability to
differentiate can be acquired'?

〉For example, in the process of the transformation from (5) to (1), John is replaced with who, and it is moved to the head of the sentence. That native speakers can intuitively know the (4) is incorrect partly could show that they engage in a kind of grammatical computations unconsciously and instantaneously.

Sorry, after reading your last paragraph a second time,
I still fail to get what you want me to comment on.
Please write again and give me a question.

Let just add that my position is that there has not
yet been proposed a 'complete theory of grammar' for
any language, and that the lack leaves us no other way
to acquire a language, mother tongue or otherwise, except
through imitation.

One final warning. Ito Kazuo-san and their ilk are
bigots and I wouldn't touch them with a ten-foot
barge pole.