In Risk, Uncertainty and Profit, Frank Knight explored the riddle of profitability in a competitive market: profit should not be possible under competitive conditions, as the entry of new entrepreneurs would drive prices down and nullify margins, however evidence abounds of competitive yet profitable markets. To explain this seeming paradox, Knight uncovers the distinction between calculable risk and essentially unknowable uncertainty. Knight argued that risk stems from repeated events, which therefore allow probabilities to be calculated and factored into decisions, as for instance insurers...