“Never underestimate how wrong you can be!” - Dan Peña
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''See also:'' [[Optimism bias]]
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“Never underestimate how wrong you can be. Even the most careful planning can be overtaken by external events and circumstances.” - Dan Peña, American businessman and business coach<ref>[https://twitter.com/danspena/status/1339555447741829125?lang=en Dan Peña's Twitter feed]</ref>