>>11952099you can echolocate, albeit not as precisely as a bat or dolphin.
>>11952364this anon gets it. clothing designs are varied, yet the tunic, pants, underwear, skirt are all fairly universal designs. Weapons are varied, yet typically projectiles are long, thin, pointed. Boomerangs are an interesting exception but the basic principle is there - something that can go a significant distance through the air and knock out or kill something that you want to see dead. There was a hilarious article I read once about how architecture is sexist and most buildings are phallic by nature. Yet, the phallic-looking skyscraper is a highly efficient design that makes use of otherwise unused vertical space while minimally utilizing horizontal space. In biology, there's an implicit understanding that form is directly based on function, that structures develop according to what is efficient or necessary to achieve improvements functionality which lead to better fitness. Why do you think almost every society has adopted or is currently proceeding with industrialization? Why is capitalism so pervasive? It all comes down to fitness, and fitness directly corresponds to environmental challenges. The challenge of navigating in low-light conditions can be universally met with echolocation (so long as the environment is a fluid and not a vacuum). If you've got a small enough mass, flight generally increases fitness significantly, as it makes it much easier to navigate harsh terrain and obtain food that is inaccessible to land-dwellers. Why are fins near-universal among fish and marine mammals? Why do marine invertebrates like squid or jellyfish both utilize similar methods of propulsion? Divergent evolution is simply unrelated organisms facing similar obstacles to fitness and evolving similar means of negotiating around such obstacles. Physics is physics.
