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In other words, there is not one way of measuring time more true than another; that which is generally adopted is only more convenient.
Henri Poincaré
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Where these words come from

How sure this is
95% sureThese words were traced back to where they first appeared. That source is listed below.
What turned up
The Value of Science, in The Foundations of Science (1913 translation); Exact wording and attribution checked. Philosophical argument about conventions defining units, not a claim that any inaccurate clock is equally useful.
Work
The Value of Science, in The Foundations of Science (1913 translation)
Sources checked
  • gutenberg.orgChecked using manual, 21 October 2026The Value of Science, in The Foundations of Science (1913 translation); Exact wording and attribution checked. Philosophical argument about conventions defining units, not a claim that any inaccurate clock is equally useful.

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