All dimensions are a factor. Life could exist on different time-scales (e.g. it moves so slow we thought it was inanimate). It could exist on different physical-scales (be so large we don't realize we are a part of it). Or, it could exist on an entirely different plane of existence (on a desolate planet in a shard of silicon that is turing complete and quietly simulating its own recursive universe).
fzeindl|2 years ago
While these are valid and interesting ideas from science fiction, I personally doubt that there's some fundamental property about human life that we haven't noticed yet, like some fundamental connection to other matter.
Simply because there's no evidence that our primitive understanding about what is life, has fundamentally changed in history. I guess a few thousand years ago people understood that we, plants and animals are alive and rocks are not and we still think the same. (nature religions aside)
So if there was no shift in understanding for such a long time, why should we now realize we are part of something a part from an eco system?