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## Main Question or Discussion Point

In the first Volume of his lectures (cap. 6 first Paragraph), Feynman cites Maxwell :

Considering the formal and rigorous definition of probability, very often misunderstood by not-scientists, what do you think is the deep meaning of this aphorism ?

Often, during the day, we take decisions based on the "probability" of the outcome, but if probability is formally referred to a repeatible event in unchanging conditions, is still useful to use this surrogate of probability in every-day decisions ?

"The true logic of this world is in the calculus of probabilities".

"The true logic of this world is in the calculus of probabilities".

Considering the formal and rigorous definition of probability, very often misunderstood by not-scientists, what do you think is the deep meaning of this aphorism ?

Often, during the day, we take decisions based on the "probability" of the outcome, but if probability is formally referred to a repeatible event in unchanging conditions, is still useful to use this surrogate of probability in every-day decisions ?