united-states
Legal age of adulthood
<p>If current law establishes that a fetus is considered life at it's first confirmed heartbeat,  shouldn't life start then? At which point does one's age begin. Example: "a delivered baby" on 5/1/0000 would actually be older based on "first heartbeat" detected and not the delivery date? Is age even a question of law?</p>

<p>Age is computed based on date of birth. Age is a question of law, for laws regarding drinking, smoking, sex, voting, contractual responsibility, holding the office of president, and many other things. </p>
