Exhibit 0.3
~270BCECtesibius and self-regulation
In Alexandria, Ctesibius improves the water clock with a float that regulates the flow of water automatically. It is among the earliest known examples of automatic control through feedback: the mechanism corrects its own operation. Centuries later, feedback would become central to cybernetics and AI. He also developed pumps and the water organ.
Why it is in the museum
This room shows that the desire for self-moving machines, logical rules and artificial beings is far older than the electronic computer.
What supports this exhibit
Ancient technical testimony
The use of floats and regulating mechanisms in water clocks and other automatic devices associated with Ctesibius.
Main source: Vitruvius, De Architectura IX.8, on Ctesibius and water clocks.
What to keep in mind: Well-attested ancient engineering; the term “feedback” is a modern interpretation.
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