It’s easy to get into the weeds of your work and create an internal language and way of seeing things among the team.
That’s when outside perspective is good. It’s valuable to talk about what you’re working on with someone who’s not in the day to day grind, because they will come at it without all the shared assumptions. They’ll provide a perspective you don’t have and make you see things you didn’t see.
When their ideas are an improvement over yours, this is great.
But when their ideas are worse than your team’s?
They’re still valuable.
When you and your team talk with someone who brings a whole new, and not very good, perspective, it galvanizes you. After the encounter you might vent your frustration with how incorrect this person was, and all the sudden you’ve got the whole team presenting answers, alternatives, and exciting reasons why you have something better than this outsider’s approach. It shakes you out of taking it for granted, makes you defend your vision, and rallies you around an underdog, chip-on-the-shoulder, something to prove narrative.
That can be just as valuable as good advice.