I didn’t read all of this so excuse me if I’m repeating something.
Anyway, “I think therefore I am”.
This is what it’s all about.
See this whole discussion is useless, and there’s no way we can find any ‘real’ answer.
A ‘thing’ can exist all alone with no ‘interaction’ because if it exists, it exists.
My point is, we’re never gonna know if something that is alone(alone being with nothing around it, or noone to perceive or interact with ‘it’ is gonna exist or not, because of the way ‘it’s’ very nature.
So my point is, “I think = I exist, therefore I am = therefore I am”.
Heh, I tried to put it into words as good as I could, but it’s not easy.