He worked for the National Mutual Life Assurance Society and became a fellow of the Institute of Actuaries before leaving the profession in 1914.
[2] Afterwards he joined the London stock exchange and in 1917 was invited by John Maynard Keynes to work at the Treasury where he proved himself to be a gifted ‘practical economist’.
[6] In correspondence with William Sydney Robinson, Falk claimed that during his school days he solved Cambridge Tripos mathematical problems in his sleep and was able to write the solution on waking in the morning.
[2] Falk was married to Florence Ethel Hengler on 29 March 1906 and was admitted a member of the London stock exchange in 1914.
[1] He spent a lot of time with John Maynard Keynes[2] who, Robert Skidelsky has argued, owed to Falk “his superb understanding of the unruly financial mechanism of capitalism”.