We have two eyes, two ears, two hands, two legs, two lungs & two kidneys: Why did nature give us two of everything?
Zee News
Why nature gave us a 'backup': Two eyes, two ears, two hands, two legs, this isn’t a coincidence but one of evolution’s smartest designs. From survival advantages to brain efficiency, your body’s symmetry hides a fascinating biological strategy millions of years in the making.
The Blueprint of Symmetry: Humans follow a concept called bilateral symmetry, meaning the body is divided into two nearly identical halves, left and right. This design dates back over 500 million years, when early animals evolved a forward-moving body plan that required balance, coordination, and directional movement.
Instead of being randomly assembled, our bodies were “engineered” by evolution to move efficiently through the environment. Having two sides allowed organisms to:
1. Move in a straight line instead of wobbling
2. Maintain balance while walking or running
3. Process environmental information from multiple directions
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India AI Impact Summit 2026: The seven Chakras are Human capital, Inclusion for social empowerment, Safe and trusted AI, Science, Democratising AI resources and more.