The Organism
An organism, when in the morning, it has four legs, when at noon, it has two legs, when in the evening, it has three legs. What is it ?
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The Human Being
Infant stage : 4 legs (2 hands and 2 feet to support movement)
Adult stage : 2 legs (2 feet to support movement)
Old age : 3 legs (2 feet plus a “stick” to support movement)