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A thousand man-years of effort? Sounds like a very large project.

Just for contrast: I've been working for a medium size software house for the past 4 years. Typical project size is somewhere around 500 to 1000 man days. On that scale, individual days matter.

Still, I also have the impression that they matter because Clients demand certainty and precision in reporting rather than focusing on actual value delivered, but the management doesn't always see it that way.



> A thousand man-years of effort? Sounds like a very large project.

Kind of. It's upper-medium.

It's nothing compared to Microsoft Office, a web browser, etc.

Microsoft for example has maybe 50k developers and so creates 50,000 man years of work every single year.

> Typical project size is somewhere around 500 to 1000 man days.

That's roughly 2 devs for a year. That's hardly even a prototype where I work.

It is fascinating to see the difference in scale in our industry.




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