Cognitive Development - Really?

Studying for early childhood, I came across this scale in my textbook. It's logical. It's accurate. It's correct. But it opened my eyes to how kids see things.

You know how kids are more 'cavemany' than adults? This definitely proves that. I remember reading somewhere that babies under six months are the only ones to understand the whole Schrödinger's Cat theory thing. This charty thing kinda enforces how children think so much less scientifically and more based on really basic stuff that we should all just worry about.

Also, have you ever read one of those reports like 'Chimp completes an IQ test' which say that they have the brain of a two year old or a five year old or thereabouts. You notice how that doesn't go above about a six or seven years old?

Maybe we're not meant to mentally develop too much more than teenage years. Which is when we're really meant to be having babies. ENOUGH THINKING for now! Back to studying!