“Let’s assume that exiert has some survival uses”—If no human has ever experienced it, why would it have survival usages? I can imagine this if exiert is a combination or strengthened version of other, more common experiences, but it seems unlikely if it is something qualitatively different.
What is more plausible is that there might be some states that we would have experienced during evolution, but which we don’t experience any more in the modern world. Then these would be more likely to have survival usages.
“Let’s assume that exiert has some survival uses”—If no human has ever experienced it, why would it have survival usages? I can imagine this if exiert is a combination or strengthened version of other, more common experiences, but it seems unlikely if it is something qualitatively different.
What is more plausible is that there might be some states that we would have experienced during evolution, but which we don’t experience any more in the modern world. Then these would be more likely to have survival usages.