Because &quot;feelings&quot; is undefined. If the only evidence of having&#x2F;not having &quot;feelings&quot; in fish is the increase of temperature, why not simply talk about the increase of temperature, without inventing &quot;feelings&quot;? Not inventing non-material objects unless something is impossible to explain without them is the basis of science, it is called Occam&#x27;s razor.<p>My server also increases temperature under high load. Should I conjecture that it has feelings?