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Yes you built that but at what cost?

A thought Experiment You tighten the last screw on the bridge. Feeling triumphant you raise your hands and cheer. Your crew cheers. The bridge is five years too late but it is done. The people you started with are no longer with you. But they were traitors and disloyal people. “Tough times don’t last, tough people do” you utter to yourself, rationalizing the loss of your entire team. Was the bridge a success or a failure?

Estimating time and money is important for forecasting spend and planning the roadmap for the company, but they aren’t the only factors that should be considered when deciding between projects. If you ignore these aspects and only focus on the time and money a project is going to cost, then you are falling prey to the measurability bias which is the tendency to assign importance to only quantisable factors. This company effectively picked the problem of having developers carefully measure memory usage of their programs, instead of figuring out how to write a faster garbage collector.

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