In his Treatise on Human Nature, the Scots philosopher David Hume posed the issue in the following way (as rephrased in the now famous black swan pro… - Nassim Nicholas Taleb

David Hume posed the issue in the following way (as rephrased in the black swan problem by... John Stuart Mill) No amount of observations of white swans can allow the inference that all swans are white, but the observation of a single black swan is sufficient to refute that conclusion.

God made mathematics so you can tell me where I am wrong; the fragility of a derivation is transparent for all to see. Formalism allows the slightest nonsense to show. Some econs/psychs produce obscure equations to hide nonsense. They get caught: you can debunk using math!

You need to keep reminding yourself of the obvious: charm lies in the unsaid, the unwritten, and the undisplayed. It takes mastery to control silence.

Well kept secret: for selfowned people, unlike the rest, the ability to make money (hence make decisions) does not really decline with age.