You find what's valid underneath the idea, and then you build on that together with the person. You listen empathetically to the idea, using "yes and", and prob

You find what's valid underneath the idea, and then you build on that together with the person. You listen empathetically to the idea, using "yes and", and probe with compassion to find the problem, never invalidating the idea itself. If someone has a "bad idea" it's often not the idea that's important, its the underlying problem or motivation. The idea can be one way of having a conversation about the problem, and explore, with curiosity about lots of ideas. Then you can share the pros/cons together, and co-create a good solution. This doesn't always work, but it helps build a relationship, instead of coming across as a jerk to the person.