| There's another tactic too... one I use frequently for better or worse. So I see someone who says something I don't entirely agree with but I want to see where they are coming from. I start arguing with them, asking the harder questions, pointing out things I see as problems, not to push back or prove that I am right, but to prove the merit of their ideas. Sometimes I will say something to indicate why I am doing it, but for people who know me, I usually skip that part. The goal is then to argue, hash things out, force people to defend their ideas, and then what's left after that session can be assumed to be better than any of us could have come up with otherwise and we go forward on it. However, there are two secrets to making this work: 1) You have to be known for actually using the ideas that are effectively defended. People need to know it's not personal and that it is both professional and empowering to them. If I argue with your idea, it is because I see potential value in it but I want to make sure it doesn't easily collapse. In some cases I will offer to stand aside remaining objections or in some cases, I will endorse the idea. 2) You have to be open to (and appreciate) everyone else doing the same to you. The point here is that it is a vetting process, and my ideas can be challenged just like everyone else's. In fact if you challenge my ideas, that's again a sign of respect. If you didn't value the ideas, you'd probably ignore them or (if they go against your stakes in the project) argue instead that they are dangerous or problematic. Being argumentative, like being defiant, is a powerful tool, used right. It just takes some time and effort to make sure that it is used right instead of being used in a way that is destructive. |
However, you can also wrap that in a friendly approach as youlost_thegame mentions - simply acknowledge the potential of the idea first (ie, positive energy) then go in with the tough questions.
I find even with friends and close colleagues, if I stick to the "nice first, then difficult questions combined with enthusiasm", I can often critique the idea while making the entire conversation positive. Often the faulty idea gets discarded by it's owner after consideration.