They've crossed a brain threshold much earlier, that perhaps not at age 22 or 20, but even by age 15 or 16 you can begin to see the trajectory for development is quite different at the level of the brain, not at the level of behavior.
もっと早い段階で 脳の閾値に 踏み込んでいます 恐らく 22歳 20歳にも満たない 15歳 16歳頃までに 発達の課程が全く違う事に 気付き始めます それは脳に見られる事で 行動には表れません