I would like to pull out a phrase from the above quote:
The prapañca. This evasiveness claims to be for the opposite. For prapañcopaśamaṃ śivam, for the auspicious calming of prapaña, if my Sanskrit isn’t off in saying that.
I don’t claim to “get” much, but there is something that I think I might “get” about this tetralemma business, from prapañc-ing about it endlessly trying to get what its “about”.
You just stop. That’s it’s lesson. It says it right in the opening:
anirodham anutpādam anucchedam aśāśvatam |
anekārtham anānārtham anāgamam anirgamam ||
yaḥ pratītyasamutpādaṃ prapañcopaśamaṃ śivam |
deśayāmāsa saṃbuddhas taṃ vande vadatāṃ varam ||
there is neither cessation nor origination, neither annihilation nor eternity, neither one nor many, neither coming nor going, according to dependent origination, the auspicious calming of proliferation, I salute the Saṃbuddha, the greatest speaker, who taught the doctrine.
(MMK dedicatory verse, if my secondhand Sanskrit if not off)
All of this “neither/nor”:
Stops all possible options for equivocations, particularly the 4th lemma, which is essentially rounding off the rest of the options for the inventive speculator.
“What if something both exists and doesn’t exist so fundamentally at the same time that it truly can’t be called ‘existing’, because it doesn’t exist, it can’t be called ‘nonexisting’, because it exists, and it can’t be called ‘both’, because the manner of the non-dual relations between its extant and non-extant states are such that it can also be correctly described as ‘only one of these states’ at any given time in addition to being in both of these states at any given time.”
That is what the 4th lemma gets rid of. It is the “and 1-3 were the only options you ever had” 4th option.