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Stowe Boyd's avatar

Have you looked at Frank Knight's work? Nick Bloom on Knightian uncertainty: 'One can consider two types of uncertainty: risk and ambiguity. This distinction was made by Professor Frank Knight of the University of Chicago in his 1921 book "Risk, Uncertainty and Profit". He identified risk as occurring when the range of potential outcomes, and the likelihood of each, is well known – for example, a flipped coin has an equal chance of coming up heads or tails. One could answer a question like “How many times would you expect a coin to come up heads if it is tossed 100 times?” with both a best guess (50) and a “confidence interval” (for example, in this case there is about a 95 percent chance that a fair coin will come up heads between 40 and 60 times). In contrast, what has become known as “Knightian uncertainty” or “ambiguity” arises when the distribution of outcomes is unknown, such as when the question is very broad or when it refers to a rare or novel event. At the outset of the COVID-19 pandemic, for example, there was a tremendous spike in Knightian uncertainty. Because this was a novel coronavirus, and pandemics are not frequent events, it was very difficult to assess likely impacts or predict the number of deaths with a high degree of confidence.'

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maier's avatar

the examples appear to reflect a single archetype: sudden unexpected phase change in a system. are there others you can point at?

also related - when you say "types of unknowns" are you being binary - risk or uncertainty - or do you have a finer-grained taxonomy? i assume that if you diagnose your context correctly, you should be able to figure out what _particular_ type of unknown might exist and this can be better prepared for. Just avoiding the situations you discuss does not seem doable to me. for example, as a bank, you are probably happy to be "too big to fail" and would not want to avoid the advantages it gives, even if it screws up your early-warning system.

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