1.4 Asia - Bronze guardians in India

The Bronze Guardians: When Ancient India Created Spirit-Powered MachinesThere is a story told in ancient Indian texts. It tells of warrior robots guarding the sacred relics of the Buddha, flying ships crossing the skies at the speed of thought, and engineer gods forging mechanical marvels. This story is over two thousand years old.In this episode, we delve into the technical imagination of ancient India. You will meet Vishwakarma, the divine architect whose name means “he who does everything.” From his celestial workshops came the weapons of the gods—and above all, the Pushpaka Vimana, a vehicle capable of traveling “at the speed of thought.” Texts describe it sometimes as a winged chariot, sometimes as a flying palace with several floors, rising toward the clouds with a thunderous roar. You will discover Maya, the architect of demons, who built a palace so sophisticated that its crystal floors resembled water and its water basins resembled solid floors. Visitors drowned there, thinking they were walking, or stumbled, thinking they were swimming. His creations were called mâyâyantra—‘magical machines’. In ancient India, any machine sophisticated enough was, by definition, magical.But the most extraordinary story concerns the guardians of the Buddha.In the 5th century BCE, King Ajatashatru hid the relics of the enlightened sage in an underground chamber near Pataliputra. To protect them, he had warrior automata built, armed with whirling swords. Their name sounds strange to our ears: bhuta vahana yanta — “spirit-moving machines.”Where did the plans come from? Legend has it that an engineer from the Greco-Roman world, knowing that he was going to be assassinated for wanting to pass on his knowledge, hid the documents in his own flesh. His son brought his body back to India. This is how the secrets of Greek robotics are said to have crossed the seas. Two centuries later, Emperor Ashoka wanted to seize the relics. When he entered the underground chamber, the mechanical warriors rose up against him. A fierce battle ensued. According to one version, the god Vishwakarma had to intervene, shooting arrows into the automatons' bolts. This legend reflects a reality: in the 3rd century BCE, Greek ambassadors resided in Pataliputra. Ashoka's pillars bear inscriptions in ancient Greek. The exchange of knowledge between Greece and India was not a myth. What does this dive reveal? That the fundamental concepts of artificial intelligence—autonomy, decision-making, programmed action—are not Western inventions. And that the expression “spirit-moving machines” contains a forgotten wisdom: for the ancient Indians, the mechanical and the spiritual were not opposed.The bronze guardians still sleep in our collective memory. They remind us that the dream of creating artificial beings is universal, as old as our ability to shape matter.