I have a simple rule I try to follow: Always lead with what you know factually followed by what you think. When speaking to people, I often ask them to tell m

I have a simple rule I try to follow: Always lead with what you know factually followed by what you think. When speaking to people, I often ask them to tell me what they know to be factual and what they think. Then I like to talk about how we can prove or disprove what we think.