I'm of the belief that most project management voodoo is just that - voodoo. There is no rigor, there's no formal basis for ideas, and there's no testing of hypotheses and rejection when evidence counters it.

Engineering (even in computing) has a formal basis and practice. Project management does not. Systems thinking and industrial organizational psychology does, but rarely do you see it applied like bullshit such as agile (and in environments that do - it works spectacularly).

Out with the voodoo, and in with the scientific method, I say.