A way to think about it is considering the two elements Conditioned and the Unconditioned as a whole system, this occurs in the context of the conditioned which is subjected to past present and future phenomena and thinking about them.
Some people hold to the Idea that the Unconditioned has no Cosmological function and this is correct imo but even tho the Unconditioned is not a part of the Cosmology it is still an Integral part of the system as a whole, it is fundamental at that and if it wasn’t a part of the system then it would simply be a different system altogether and an imaginary one at that.
It is part of our language and it is among the discernable, if a person can think about how reality works he might ask prompt the questions;
* does reality exist in some sort of unreality, does it float somehow;) ?
* if unreality then unrelated to reality, thus is this reality like a dream, a self-sustained dream, a persistent self-sustaining ecosystem of a dream with lack of development as a supporting condition?
All these questions can be asked in the context of the world and aggregates, our referable reality can be said to give rise to these questions based on the assumption that there is an unmade unreality to be discerned.
Thus self-directing the ecosystem is set for development of discernment which leads to right intention for self-termination with pre-determined arising. It's termination and abscence; that very discernment of highest good.
If one then agrees that unconditioned element is a fundamental part of the system of language referring to things to be discerned as a truth somehow, part of such language system as a whole it is then natural to infer that what is fundamental could be spoken of as the fundament, a foundation or the basis of something; a ground.
i am saying is that the root of phenomena is desire and foremost supporting condition for their manifestation is Ignorance, so by removing the supporting condition, the phenomena are uprooted and do no manifest. If phenomena do not manifest there is only that which is ground, the unmade state. In this way ground is not brought into being nor is it conditioned but with cessation of suffering[the constructed] it is the primary happiness, unobstructed by any world, the beyond.
the first sentence declares cessation of the constructed, the second sentence declares the beyond as unmade dimension which is if the constructed is not. The most sublime constructed state is the state of neither perception nor non-perception with the cessation of the the phenomena present in that state there is no remaining constructions and thus;
There is that dimension, monks, where there is neither earth, nor
water, nor fire, nor wind; neither dimension of the infinitude of
space, nor dimension of the infinitude of consciousness, nor dimension
of nothingness, nor dimension of neither perception nor
non-perception; neither this world, nor the next world, nor sun, nor
moon. And there, I say, there is neither coming, nor going, nor
staying; neither passing away nor arising: unestablished,
unevolving, without support [mental object]. This, just this, is
the end of stress.
It can be explained to be the ground because it is the most sublime and underlying reality to the beginningless cycle of constructs and an everpresent alternative [of escape].
There is, monks, an unborn — unbecome — unmade — unfabricated. If
there were not that unborn — unbecome — unmade — unfabricated, there
would not be the case that escape from the born — become — made —
fabricated would be discerned. But precisely because there is an
unborn — unbecome — unmade — unfabricated, escape from the born —
become — made — fabricated is discerned.
A being is and is of the world, a being exists entirely in the world and both the world and the being are constructed and subject to change [evolving]. Thus a being is a construct which experiences the constructed. The constructed states occur in a system which facilitates the occurence of the constructed states, fascilitates existence of the world and experienced states. The constructed [dependently arisen by means of evolving] states that arise are to that extent states of the system. The system which fascilitates the manifestation of various states is in itself unchanging, being the same system all along the system is merely going from one state to another.
One can thus point out an unchanging constant of change.
In this way the system itself can be understood to be unchanging while the states of the system are changing, therefore one can say that the changing gains a footing in the unchanging. With the cessation of dependently arisen states of the system, the system is in the unmade state and the unmade state and the system are thus one and the same because Unmade state is not a state like the made state, it is the system itself without a state per se.
When the created is, only then and to that extent is it said to be gaining a footing. When the created is not, then there are no phenomena to talk about and even the word "created" is created and the word is certainly not 'it' nor is the word 'it' really it, 'it' is just another word for something uncognizable by the senses and mind.
Thus when created is not, there is essentially nothing to talk about because it is beyond the range of objects, elements and entities.
Therefore when one talks about unconditioned as something where what is existence gains no footing, one can only do so from the perspective of non-existence of the world and it's cessation because outside of that is beyond range and there the world gains no footing.
the problem with the matrix movie is that therein the supposed ‘real world’ could well be generated by matrix still, so neo actually has no way of knowing that the whole action movie playing out isn’t a simulation and that he isn’t still in the matrix thinking he has been unplugged.
if one was to remake the movie to adress that problem the ‘real world’ therein would have to be ‘unmade’ without any ‘things/phenomena/information/entities/beings’ and no self or any part of the not-real world would be ‘coming out’ of the simulation after it’s cessation. One could never rightly express on film the ‘unmade’ because one can not express that which is beyond senses by media of the senses.
Furthermore that which is ‘simulation’ and ‘that which simulates’ would have to be conjoined to the extent that both are subject to cessation, as it would turn out the simulation therein would have to be self-sustained, self-simulated and self-directing due to internal causes and conditions, this is because only the made can be a cause for what is made, the unmade is uncaused and does not cause anything for therein there are no causes or conditions, thus no past, present or future either, therefore therein occur no acts of creating, directing, no eventuality at all.
So basically existence of beings is a delusional nightmare self sustained by lack of development, it is like a mirrage
afaik i should be able to give substantially consistent pali canon support for most of this reasoning so that it is more or less irrefutable by the canon itself but full list of references would be 20-30 discourses and excerpts alone 50+ pages. ask if want more details, also the way i express it isn't particularly good i think and can well contain philosophical mistakes.