Interestingly enough, the way you described how Dewey's and Schiller's idea of older truths reminds me of Natural Selection. Truths that worked successfully were kept, while truths that became useless or detrimental were replaced by better truths. It sounds like how some genetic traits within a species that helped them adapt to their environment are accepted and replace other traits that are now lost to time, which existed in extinct species. Pragmatism has some way to connect back to a law of nature, and that fascinates me. Great video!