I am reading Longchenpa’s “Kindly bent to ease us”, and just read the section on impermanence (the first, in any event: it will likely be a recurring theme). And it occurs to me the intent is not to deprive people of everything which comforts them, now. It is shock method of waking them up to focus on what is subtle, what is latent, and what is real and permanent. In my own iteration, I would call this God, which modern science–which knows close to nothing about it–calls the Zero Point Field. It is Space, the source and return of everything.
Who can see what is subtle when they focus on what is bright? Who can see what is distant–perceptually–when their whole attention is focused on what is near and tangible?
This is the meaning of impermanence, in my view. Although, obviously, empirically, this is merely stating clearly plain facts.