Inquiry appears to be a process of thinking, but actually it's a way to undo thinking. Thoughts lose their power over us when we realize that they simply appear in the mind. They're not personal. Through The Work, instead of escaping or suppressing our thoughts, we learn to meet them with unconditional love and understanding.
Your understanding of another person is limited by what you think you already know. So when you just listen, the person you meet won't match your preconception. The exciting thing is that you usually meet someone much wiser and kinder than you expected. You might also lose track of your ideas about who you are.
Do you know anyone who hasn't changed his mind? This door was a tree, then it will be firewood for someone, then it will return to air and earth. We're all like that, constantly changing. It's simply honest to report that you've changed your mind when you have. When you're afraid of what people will think if you speak honestly, that's where you become confused.