Eh, it's just people being people. It's similar to how when you're learning first aid, they always tell you to not say "Someone call 911!" but rather point at one specific person and say, "You, [distinguishing characteristic of said person], call 911!"
That's a very good analogy. Much of role is just coordinating; expecting your team to self-coordinate is expecting your team to do your job for you, and leaving things up to chance.
