Columbo
The person who makes a claim owns the burden of proof. Ask before you argue.
On a napkin
- 1What do you mean by that?
- 2How did you come to that conclusion?
- 3What would you need to see to reconsider?
- 4Have you ever considered…?
Say this
I want to understand you before I answer you. What do you mean by that — and how did you come to it?