This has been proven true in a research paper. As you add more manpower to a project, it slows the progress on the project due to other programmers having to bring the new programmers up to speed.
Actually, the one that should scare all concerned is #12. As a recovering programmer, my best tool was to code constraint rules at the beginning to filter the data. Even so, the time bomb is a very real danger and right now I think it may be in the data security area, but that is a guess OBVIOUSLY!