I think that part of the problem is that different groups are using the same word ("Pain") and attaching different meanings to it.
The scientists are, indeed, observing something: "profound behavioural and physiological changes" and labeling it "Pain". Perhaps this is a standard usage in the field; but when most laymen hear "Pain" they think about the kind of anguish that people can feel. This is something entirely different and cannot be established by observation (certainly not today).
It's my understanding that our best theories about how brains work tell us that fish nervous systems are not capable of experiencing this human-like pain and these experiments do nothing to change that.
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What we have here is a failure to communicate
I think that part of the problem is that different groups are using the same word ("Pain") and attaching different meanings to it.
The scientists are, indeed, observing something: "profound behavioural and physiological changes" and labeling it "Pain". Perhaps this is a standard usage in the field; but when most laymen hear "Pain" they think about the kind of anguish that people can feel. This is something entirely different and cannot be established by observation (certainly not today).
It's my understanding that our best theories about how brains work tell us that fish nervous systems are not capable of experiencing this human-like pain and these experiments do nothing to change that.