Moreover, human researchers may discern applications overlooked by metahumans, whose advantages tend to make them unaware of our concerns. For example, imagine if research offered hope of a different intelligence-enhancing therapy, one that would allow individuals to gradually “upgrade” their minds to a metahuman-equivalent level. Such a therapy would offer a bridge across what has become the greatest cultural divide in our species’ history, yet it might not even occur to metahumans to explore it; that possibility alone justifies the continuation of human research. We need not be intimidated
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