The idea of any model being a ‘weekend project’ in adult life really was the triumph of hope over experience. Deep down I knew what a realistic timescale looked like, but every so often reality got pushed into the back seat. Fortunately this never, ever happened on any real life aerospace projects I got involved with.
The weekend project fallacy teaches us about realism, delusion and project schedule slippage. Yet more of those pesky cognitive biases, it would seem. Daniel Kahnemann never mentioned Airfix kits in Thinking Fast and Slow but I have my suspicions.
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