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I'd reframe this question. What constitutes a phase transition at all in the sense being talked about here isn't super clear. There's a clear definition in che
by nonameiguess 3y ago
I'd reframe this question. What constitutes a phase transition at all in the sense being talked about here isn't super clear.
There's a clear definition in chemistry and it has analogies in cosmology as the entire universe overall went through some early phase transitions in the vacuum state when it was of much greater average density. These are all related to qualititative changes in the properties of matter as temperature and density change.
I would grant that life is a qualitatively different state of matter but it isn't as obvious as the more familiar phase transitions. We don't have a clear demarcation for what is and isn't life. This paper attempts to give a definition, but the fact that that is being done at all shows there isn't one already that is universally agreed-upon, unlike the definition of what is solid versus what is liquid. I guess all life we're aware of consists minimally of a semi-permeable barrier, ingests and stores energy inside of this barrier, and locally reduces entropy inside the barrier while dissipating heat and/or other byproducts into its environment.
Life is, of course, not the only thing that does this. My house fits the same description. The only real line in the sand we have between things we consider alive and things we consider tools is that things we consider alive are all born and descended from other living creatures, not assembled from found or fabricated parts.
Ultimately, though, this is a difference in origin, not a difference in quality or capability. Any tool, including electronic computing devices, can potentially have all of the same qualities as life if we could figure out how to make them self-assembling, self-healing, and self-reproducing. I guess we can do this with software, but it isn't obvious to me how to even demarcate a unit of "software" as an individual entity. How to demarcate intelligent from unintelligent software is even less clear, but nothing about the underlying state of matter the computations run on is any different, so I don't see how it involves anything we can call a phase transition without severely straining the term.