Just the day before we can’t figure out whether to inhale or drink but on our 21 st birthday all of sudden we are a genius. The pressure’s of society and our own intelligence has leaped us forward to insure that we don’t over indulgence in the new found habits (drinking, smoking, gambling etc) that society has determined were unattainable the day before. How 21 become the age of maturity is besides me but it is fixated no matter what class, race, gender or mental state one is actual in. It’s probably simpler for society just to make this arbitrary number rather then have individuals receiving basic knowledge and an earned license for these “grown up” activities to those who might not have the capacity to understand what they’re getting into at 23 let alone 21.