The discussion highlights that there has been no significant evolutionary change in humans over the past 30,000 years, a period considered relatively short in evolutionary terms. While evolution is a slow process, evidence of evolution can be observed in other species, such as antibiotic-resistant bacteria, which can evolve rapidly due to their short generation times. The concept of "high fitness" is introduced, suggesting that species may remain stable over long periods if their environment does not change significantly. Sharks are cited as an example of a species that has remained largely unchanged for millions of years. Additionally, it is noted that human evolution has been influenced by environmental modifications made by humans themselves, which can limit natural selection. The ability of humans to travel and interbreed across diverse climates further complicates traditional evolutionary processes.
