Actual superior in some respects.
When I read 'Guns, Germs, and Steel' by Jared Diamond years ago, it completely changed my comprehension of how cultures developed and expanded, or did not. Domesticatable (and I prefer that to "domesticable") plants and animals does seem to have determined which people advanced and which did not.
But having one great idea does not mean that someones later ideas are equally great. Everything I have read by him since has seemed "less-illuminating".