The impressive thing about the Mythical Man-Month isn't that, 40 years later, it is accurate in every detail and utterly relevant to your life. The impressive thing is that 40 years later, it still has a substantial amount of stuff that is accurate and relevant to your life, and that 40 years later, people still get wrong what we knew was wrong 40 years ago.

I would also accept an interpretation where that's an indictment on the field.