Hello Lal,
I just see that I have used the page numbers of the PDF, not the numbering in the book. Sorry for that.
I agree with your statement, that the author seems not know the 6th input to the mind.
You wrote: “…we receive sense inputs exclusively through the mind-door. They come through the mana indriya in the brain (not known to modern science). …”
Here I have my problem with the mana indriya. The mana indriya is part of the body or located inside the body. Why is it needed to sense kamma (beeja)? As I understand kamma beeja are stored in the mano loka of each being. Why is kamma beeja not directly sensed by the mind or hadaya vatthu?
The same question applies to the mechanism of recalling memories from nama gotta. A brahma in arupa loka has only the hadaya vatthu, no mana indriya, right? If so, how can a brahma sense nama gotta or kamma beeja?