human language
words are so wild to me. we use them every day and at high speeds, very articulately. the average sentence today would be insanely complex to people just a few generations ago, language is ever evolving, and so are human speech patterns. this also begs the question, what were the earliest human speech patterns like? people must have gone their entire lives while language was simply just not there for them to be able to express themselves at even a basic level. it must've been a very slow transition for humans to go from languageless, unintelligent mammals to where we are today. and at some point, shit got so complex that early humans moved around to different areas and created new languages there, making the cycle start again. though the rate of humans creating languages has definitely died out along with the rate of humans creating new colonies, the rate of human language evolution in complexity will never stop, and will be ever-changing.