The Book "The Mythical Man-Month" by Fred Brooks was written in 1974 and a second edition was released in 1995, which included four new chapters.
The Book is considered a seminal work in the field of software engineering and team management.
It is basically a long list of problems a software project may encounter with solutions proposed for them. (some good, some partial)
Brooks' Law: adding more developers to a project increases the number of interactions that have to exist between them, and so the output does not increase linearly.
As ESR notes, Gerald Weiberg observed that in shops where developers were not territorial about their code, and encouraged others to look for bugs and correct them, output was drastically better.
That's why an open-source Bazaar-style project which is open for public scrutiny can advance much faster than a completely closed Cathedral-style project.