What part of the plant suggests that it "wants" anything instead of just being adapted by force of natural selection to respond in certain ways?
There is nothing in plants that should make us believe they can do anything like thinking, certainly short of sentience. They have no neurons, or anything resembling neurons, only cells locked into a grid that behave in deterministic ways. It's not impossible to imagine a system that thinks using chemical signaling alone, but what makes you think plants have this quality?
They respond, for example, to light. The cells can detect light, and this induces chemical signaling that directs the plant on internodal length and direction. We could make a robot or something that does this. Could we say such a thing "wants" light? Probably not, except as a convenience of explanation out of personification.
Or, to summarize, these simple stimulus-response effects are not sufficient to justify a belief that there is intelligence. I suppose it's argumentum ad absurdum.
> They respond, for example, to light. The cells can detect light, and this induces chemical signaling that directs the plant on internodal length and direction. We could make a robot or something that does this. Could we say such a thing "wants" light? Probably not, except as a convenience of explanation out of personification.
Let me counter: I do not believe you have sufficiently proven that we ourselves are anything more than chemical signaling mechanisms.
We happen to not understand the signals that the plants are making (we really are only just barely scratching that surface - but we KNOW plants use VOCs to communicate both among themselves as well as much more distinct species like insects: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3405699/)
We just don't have nearly as much empathy available because that experience is so foreign to our understanding.
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To follow - I find it particularly interesting that people still cling so dearly to your argument as we watch machine learning tackle and overcome many behaviors we considered uniquely human. Those machines can talk just like us, their signals mirror the complexity of our own (and are much more complex than those we currently understand from plants). Does that signaling complexity now mean that it's alive?
I certainly don't think so - I would still call a plant more alive than that machine (at least right now, things are shifting fast here). Yet that machine is using a fairly simple system to process, internalize, and then create complexity that mirrors your own.
I guess I'm saying that I, personally, don't find your moral argument nearly so clear as you seem to be implying that it is. There is no easy out. We are dealing with shades of grey.
There is nothing in plants that should make us believe they can do anything like thinking, certainly short of sentience. They have no neurons, or anything resembling neurons, only cells locked into a grid that behave in deterministic ways. It's not impossible to imagine a system that thinks using chemical signaling alone, but what makes you think plants have this quality?
They respond, for example, to light. The cells can detect light, and this induces chemical signaling that directs the plant on internodal length and direction. We could make a robot or something that does this. Could we say such a thing "wants" light? Probably not, except as a convenience of explanation out of personification.
Or, to summarize, these simple stimulus-response effects are not sufficient to justify a belief that there is intelligence. I suppose it's argumentum ad absurdum.