Quote:
Originally Posted by pdurrant
True. But adding another programmer to the project is likely to reduce the amount of time the current programer spends in productive work in half (because of helping the new programmer get up to speed), and will also increase the man-hours needed to be spent on the project, as the two programmers will need to spend time talking to each other about what bits they are doing, and how the bits of code need to work together.
With one programmer: 100 man-hours. Needs to be done in 10 working days, but programmer can only sped 7 hours a day working. Will run four and a bit days over the time limit
With two programmers: 130 man-hours. In first ten days you get only 35 hours from first programmer, and being incredibly generous, say 35 hours from second programmer, leaving 60 man hours still to do. If they are now both fully up-to-speed, they'll just finish in another four and a bit days.
Hm....
Adding resources to a late project usually doesn't help. In fact, it usually makes it later, unless the added help is already familiar with the code and the working methods.
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True too. Hence the need to get you estimate right at first.