How good is Ainan's comprehension of textbooks?

It is has been pointed out to me, that, for some children there is a gap between their reading and their comprehension. With Ainan this is not the case. He comprehends all that he reads - that I have observed him to read - and comments abundantly in a manner which shows that he has understood it. This applies to the science texts of all levels, including University that he has read, so far.

I hope that clarifies the matter for the reader who raised the issue with me.