seeing is believing


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seeing is believing

  1. (idiomatic) You need to see something to believe it; visible facts cannot be denied.
    • 1712, John Arbuthnot, The History of John Bull:
      There's nothing like Matter of Fact; Seeing is Believing.
    • 1848, J. C. and A. W. Hare, Guesses at Truth, second edition, page 497:
      Seeing is believing, says the proverb. Though, of all our senses, the eyes are the most easily deceived, we believe them in preference to any other evidence.
  2. (idiomatic) I am skeptical about your claim.
    They said their product will be ready for shipment in two months and we could even "take that to the bank", but we've heard that before. Seeing is believing.