What do my vacuum cleaning skills have in common with carrier selection? Whenever I’m vacuuming our house, I typically get comments from my girlfriend: If I’m moving too fast, she’ll point out that I must have forgotten certain spots. If it’s taking her too long, she’ll complain that I need to speed up. I then tell her that if she expects it to be done good and fast, she is gonna have to pay (a professional cleaner). This refers to a common project management term: the Iron Triangle...