Programmer Humor

That's because humanity dates back to the teletype era, before bytes. It was decided that saving candles was more important than having the extra century of lifespan.

Now, by convention, the leftmost candle being unlit indicates it's a standard human and not a member of another species-alphabet, possibly requiring multiple cakes.

(On a serious note, aging is not necessarily thought to be as simple as just the Hayflick limit)