It's completely arbitrary and inconsistent everywhere (it probably initially stems from how many males of that age can be drafted and yield a net benefit). Soc

It's completely arbitrary and inconsistent everywhere (it probably initially stems from how many males of that age can be drafted and yield a net benefit). Societies routinely violate this through their justice systems ("tried as adult" is a concept in many countries) and their taxation systems (taxation without representation is anathema to at least one country except in this case for some reason). >Your brain and body stop developing at 23 if I'm not mistaken? And your brain and body begin majorly degenerating past about 60 (insurance data rates them as causing about the same number of accidents per mile as beginning drivers starting at that age), but most countries don't strip your rights at that age.