All living systems? Hmm. Maybe our definitions of "abstraction" differ. What abstraction does grass make? In order for us to know, a key is being able to communicate those abstractions, and as I use the word, I don't see how we could ever know if the abstractions made by grass aren't just our own anthropomorphic projections.
Abstract said:
1. consider (something) theoretically or separately from something else.
"to abstract science and religion from their historical context can lead to anachronism"
2. extract or remove (something).
"applications to abstract more water from streams"synonyms: extract, isolate, separate, detach "he abstracted the art of tragedy from its context"
used euphemistically to say that someone has stolen something.
"his pockets contained all he had been able to abstract from the apartment"
withdraw.
"as our relationship deepened you
3. make a written summary of (an article or book).
"staff who index and abstract material for an online database"synonyms: summarize, précis, abridge, condense, compress, shorten, cut down, abbreviate, synopsize; rareepitomize
It's a very abstract concept of mine of what abstractions are at their base and
why they are possible.
We are used to abstracting at will, re-representing the universe, defining things with respect to our identity or our purpose. It is natural to you, so you don't think about the basis of what you are doing. But at the core you need to have an identity and you start to simplify the universe, to describe it, and to re-examine it from your perspective.
So, for grass, It's more about what grass is, than something it does consciously. What it DOES is live, and the process of being a living system requires something similar. Grass is a system that reproduces itself, and reacts to it's environment. Even if this reaction is intergenerational. It must react to stimuli in a "grass like" manner, or from the perspective of "system grass".
This means that grass doesn't just react (like a rock) it reacts with respect to a specific identity, it must maintain it's physical boundaries, it must re-make (reproduce) itself. It has a rudimentary sense of a definition for itself, and this self vs not self interaction, doesn't exist in the rest of the physical universe. It is a life specific quality.
We too have this basic systematic living function upon which there has been added layer upon layer of complexity until an abstract concept building engine capable of control over the organism and a global sense of self emerges. This I think is a massive simplification, but again, it's what we do.
The ability to create language, a higher order abstraction meant for communication of abstract ideas between minds, doesn't, in my opinion, define the basic system, we just see it that way because we are used to dealing with language.
In that sense, I don't know why the adjective "living" would be necessary. It seems it would just be that all systems make abstractions.
As I said, the other systems of matter just move with respect to their fundamental properties, they don't have any set boundaries that must be maintained and no way to react in the way the living thing would.
All you need is some medium to convey the functions, right?
Divorcing it from the physical is my issue. If I knew the proper structure of consciousness I could easily recreate it via a computer program (an abstract processing consciousness or mind made of abstract programming language) but, the medium holding these abstractions are going to still ultimately be the physical hardware needed to accomplish this, all I have done removed the process one step.
I don't know of any other "mediums" capable of this basic existential support other than physical ones so I can't comment on if they are possible.
If a medium were capable of being as consistent and sensible as physical mediums are, to the point where minds could either be created or emerge from them, I am also not sure how I would differentiate them from physical mediums...