What? I could very much see someone having that expectation at 20, maybe even at 25. At 30, we're already talking about a serious lagging in somebody's developm

What? I could very much see someone having that expectation at 20, maybe even at 25. At 30, we're already talking about a serious lagging in somebody's development as an adult (unless that someone was in jail/hospital the whole time and knows society only from TV etc.). At 35, I don't even know where to begin.