Fixing the model, breaking it again: why fixes are never free

Module 1 · Topic 3

By the end of this topic you will have fixed your own model, run a before-and-after battery to catch what the fix broke, and written a fix-and-tradeoff log: a dated record naming what the change cost and who accepted it.

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Now you: fix a model and log what the fix cost

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Understand why fixes are never free

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