Day 292 · Oct 18

The Birthday of Henri Bergson (1859) – Time and Mathematics

Bergson was a philosopher who distinguished between mathematical (quantitative) time and lived (qualitative) duration. He argued that mathematics reduces time to a line of instants, losing its flow. His ideas influenced phenomenology and process philosophy. Mathematical time (t) is a parameter in equations of motion; Bergson’s ‘durée’ is not measurable. This tension is alive in physics: the arrow of time (entropy increase) vs time‑reversible equations. Mathematics captures one aspect of time, but not all. A reminder that not everything is number.

What is the ‘arrow of time’? The second law of thermodynamics says entropy tends to increase, giving a direction to time. But the underlying laws (Newton’s, Schrödinger’s) are time‑symmetric. Why?

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