Nothing new here. People always thought they already know "everything that's important" and "only a few details are missing". We, as a species, are quite arroga

Nothing new here. People always thought they already know "everything that's important" and "only a few details are missing". We, as a species, are quite arrogant and entitled to our perceived "large knowledge". That's why real progress is so slow even "things are obvious"—at least afterwards.