I think asking "how" is a better idea. "How do you think it work", "Don't you think X have more impact than Y?", "How do that work in your mind?". Because if y

I think asking "how" is a better idea. "How do you think it work", "Don't you think X have more impact than Y?", "How do that work in your mind?". Because if you're wrong, asking why doesn't really help you, You will highlight blindspot and that's all. Why is a trap.