More people means we have the ability to consider solving harder problems
Maybe we don't know how to build a Saturn V anymore because we never built one? https://swprs.org/the-moon-landing-controversy/ and particularly https://www.serendipity.li/more/myth_of_apollo.htm
Maybe we don't know how to build a Saturn V anymore because we never built one? https://swprs.org/the-moon-landing-controversy/ and particularly https://www.serendipity.li/more/myth_of_apollo.htm