This manifestation is constantly being played out by the adjuncts' interactions with whatever they encounter and are reactive to in the manifestation. And the coreSelf?

Well it is affected or not affected according to its sensitivity to the adjuncts.

In the game of debate, I would write to the monk that:

 Because there is a self, that is why everything is possible because the self is a constant around which everything spins and is supported.

Because we have a central power deep in the earth, there is gravity which pulls everything to that center and we all stay put instead of floating off into space. But that gravity shows as nothing physical and so it can be said that it is not there but we know that it has to be there just as we know that the cell phone signal has to be there even though we cannot proof that it is there as a physical something in terms of what we can see and hold.

To be fair however, we admit that this is based on assumptions, that there is a self or target of feelings and observation.

So long as one is limited and was a victim in this manifestation, it makes sense that one would begin with a no-self assumption, because the reason for trauma is the connection of a self with whatever produces the trauma. Logic is that if that self is removed, it would have no trauma. So long as that self is there, and it is not absolute and it cannot control the manifestation, it is a sitting duck for every hunter who comes into the forest. Hence not being in existence seems like a solution.

But is it?

Does this self really have the power to de-exist or to cancel itself?