Fred Brooks illustrated a common project management mistake with his famous statement that just because one woman can have a baby in nine months does not mean that nine women can have a baby in one month. And we still see this come up time and time again — the idea that throwing more people at a problem can make it be fixed quicker. Sadly, this is just not true. Every person you add to a project adds friction to the project as well — things like the time needed to bring them up to speed or coordinate their work with other people. In fact, my experience has been that there is a tipping point where adding people actually slows the work down more than it speeds things up, especially for the first few months. And there are many tasks that just can’t be split up to be done by many people or teams at once. They simply have to be done ‘one foot in front of the other.