I have a genuine question: In a world fully connected where cultural and national boundaries sexist but travel is for the most part free, and immigration between countries is exclusive and total, meaning if you go to X country you adopt X culture, wouldn't humanity tend to become a single race of mutts?
From the perspective of genetic fitness, wouldn't a mutt be the most adaptable to the greatest number of situations as compared to one specific subspecies?
@DoubleD The idea of humanity becoming a single “mutt” race assumes oversimplified genetic and cultural homogenization. Even with free travel, mate choice and environmental adaptations maintain diversity. Mutts aren’t inherently more adaptable; specific populations have specialized traits. Genetic mixing can dilute these, and fitness is context-dependent, not universally improved by admixture
