living proof

English

living proof (uncountable)

(idiomatic) A real-life person or thing which demonstrates the validity of a hypothesis.
His story is living proof that anyone who puts in a good amount of hard work can find success.
- 2020, Christine Chiou, “How Taiwan Battles the Coronavirus”, in The Diplomat‎:
  Taiwan is not only a beacon of democracy, but also living proof that control of an emerging virus can be achieved through science, technology, and democratic governance. No draconian autocratic measures are required.

real-life person or thing which demonstrates the validity of a hypothesis

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