yeah 18 has more to do with the experience and emotional maturity necessary to navigate the society we've built than it does with biological maturity. Our priv

yeah 18 has more to do with the experience and emotional maturity necessary to navigate the society we've built than it does with biological maturity. Our private parts are ready to go long before our 18th birthday, which is obvious from the ultra hormone shot that high-schoolers get. On the other hand, full cognitive maturity isn't complete until long after that birthday. It seems almost like the line at 18 is purely for practical reasons around the need for workers than it is due to any scientific understanding of the way humans work.