just youtube it, they can
and if they can do that, then of course they can feel fear too
When one is struggling and being engulfed by a hydra or other unicellular organism, I don't think it feels anything no.
wild
I think it is just trying to move away from the predator because it detects a molecular signal that it is "programmed" to move away from.
replace the hydra with a tiger and the amoeba with a deer, how is it any different apart from the number of cells? The deer prey could maybe have conscious thoughts/sorrow about its children during the last seconds of its life, but other than that the fear is fundamentally the same, it's just more complex/scaled up
By programmed I mean that behaviour is encoded in the complex interaction of the many systems that make it up, such as through the concerted action of it's receptors, signalling pathways, enzymes, genes etc.
sure glad we don't have any of those
Like empty a cell into a (small) bucket. They still perform all of the biochemical reactions that took place in the normal cell. But they are not in a sack. There is no unified "thing" and it doesn't move. If you did that to a paramecium, could that liquid still feel fear? It cant move away from anything. Is it alive?
Uh, I'm not an expert but I would suspect they're in the process of dying if you do that. They just don't die immediately, because nothing does (even a person who gets shot stays alive for a few minutes afterward). Can you feed this cell jelly its normal food and have it sustain itself like usual? If not then I would say it's only alive on technicality, just like a person who's been shot in the head and can still talk for the next few seconds--they're technically also alive! But the person will die once the last few bits of brain oxygen run out due to the mechanical reality of their heart not beating, and the cell-jelly-in-a-bucket will also die after some time due to the mechanical reality of their vacuoles or whatever not being able to properly absorb food (I'm guessing, anyway. But this isn't really relevant to the central point)
If you had a human brain in a jar and, for arguments sake, it could still think as normal. It is intelligent and sentient, but it cannot replicate itself. But a virus, which is still much more simple than the brain in a jar, can. When you say that rocks don't make more rocks, you seem to imply that the quality of life is in replication.
This is a disjoint coutnerexample, the point is not that a brain in a jar can't replicate itself, but that the original organism that brain comes from, can. A man who gets a vasectomy is still alive, because his default state is being able to reproduce.
Rocks however, can NEVER reproduce. There is not A SINGLE rock that can reproduce. Therefore rocks are not alive.
just youtube it, they can
and if they can do that, then of course they can feel fear too
wild
replace the hydra with a tiger and the amoeba with a deer, how is it any different apart from the number of cells? The deer prey could maybe have conscious thoughts/sorrow about its children during the last seconds of its life, but other than that the fear is fundamentally the same, it's just more complex/scaled up
sure glad we don't have any of those
Uh, I'm not an expert but I would suspect they're in the process of dying if you do that. They just don't die immediately, because nothing does (even a person who gets shot stays alive for a few minutes afterward). Can you feed this cell jelly its normal food and have it sustain itself like usual? If not then I would say it's only alive on technicality, just like a person who's been shot in the head and can still talk for the next few seconds--they're technically also alive! But the person will die once the last few bits of brain oxygen run out due to the mechanical reality of their heart not beating, and the cell-jelly-in-a-bucket will also die after some time due to the mechanical reality of their vacuoles or whatever not being able to properly absorb food (I'm guessing, anyway. But this isn't really relevant to the central point)
This is a disjoint coutnerexample, the point is not that a brain in a jar can't replicate itself, but that the original organism that brain comes from, can. A man who gets a vasectomy is still alive, because his default state is being able to reproduce.
Rocks however, can NEVER reproduce. There is not A SINGLE rock that can reproduce. Therefore rocks are not alive.