Yes, thank you Lal. Your explanations make sense. But my only concern pertaining to the concept of pure octads (suddhāṭṭhaka) is that it seems like it is not present in Tipitaka. According to this wikipedia article:
Kalapa or rupa-kalapa (from Sanskrit rūpa “form, phenomenon” and kalāpa “bundle”) is a term in Theravada Buddhist phenomenology for the smallest units of physical matter, said to be about 1/46,656th the size of a particle of dust from a wheel of chariot. Kalapas are not mentioned in the earliest Buddhists texts, such as the Tripitaka, but only in the Abhidhammattha-sangaha, an Abhidhamma commentary dated to the 11th or 12th century, and as such not part of common Theravada doctrine.
This raises question about the legitimacy of this concept. I will say that you run a juggernaut of a website so I think you know what you’re doing but sometimes I find some information here that I do not find elsewhere.