937R. T. W. Chaundy to Harrod, 8 April [a] , [1]

The letter describes, in reply to two notes by Harrod (not found), "what is probability", presenting the point of view of the mathematician, the physicist and the meaning in everyday's language. Chaundy explains that it is assumed that events, about which we are sufficiently ignorant, are considered as equally likely, and that this works well enough in many physical phenomena. Continues at 938 R.

  1. 1. Year not specified. The cataloguer of the HP attributes these materials to circa 1933, but neither the content of this nor the following letter and note seem to confirm this supposition, nor are there other documents suggesting that Harrod's interest in probability (discussed for instance in 1956 in Foundations of Inductive Logic, or while commenting on Keynes's Treatise on Probability in Harrod's Life of Keynes in 1951) arose so early. Chaundy's reference, in an example, to some Students of Christ Church (A. S. Russell, R. M. Barrington-Ward, R. H. Dundas, K. G. Feiling, and an unidentified fellow) only permits to restrict the range between 1924 and 1946.
    1. a. From Compas, ALS, four pages, in HP IV-195-198/2.

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