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Not no answers, but the answers are debatable and new. It is not obvious to a person of median IQ exactly how to translate old principles to new technologies. Heck, optimal answers are often not derivable a priori from principles - they must be discovered by memetic evolution.
In some areas, yes, top quintile intelligence + having learned first principles well = good answers. (Diet, for example - which deeply harms avg. American). In other areas (use of social media) it takes a community of experimenters & time to derive new answers.
