But these have never been able to unify all of humanity into one mindset, and no one has ever completely persuaded the other.
Perhaps until humanity goes extinct, no one will ever absolutely convince the other.
At its core... it seems to be because humans themselves are complex creatures.
Everyone has their own thoughts and perspectives on things.
And these thoughts and perspectives have continuously pushed humanity from the era of eating raw meat and drinking blood, to using stone tools, iron tools, and firearms, propelling the entire history of mankind forward.
If you truly count collective human actions, it's limited to essential physiological activities such as eating, drinking, excretion, sleeping, and breathing; humanity has rarely acted collectively in other ways.
Perhaps the only instance was being collectively transported by some unknown force to the Otherworld to survive.
