Foxes, non-domesticated cats (not big cats!), stoats, all are carnivores that have survived from long before humans even entered the picture, and do not have either the offensive, defensive or cognitive skills humans have. How do they survive?

“Cognition” isn’t just “being smart”. I suggest you actually look up what it means.

Your argument may be summarized as, “Schools are worthless because of Donald Trump, we have learned nothing cognitively in the last 100,000 years, and study does nothing for your cognitive skills.” How anyone can believe that is beyond me.