In my experience, it comes down to matching patterns.
Here's what I think likely happened: your friend talked to other people who went through tragedy. He noticed something common in their behavior. It can be something so subtle that it's invisible to most people, but your friend notices these kind of things. Then when he talked to the current person, he found the similar pattern.
He did not talk about quite a few issues like this. I think that’s because the video is targeted for a less technical audience. But this video did make me think about the innovation the world is deprived of because of this monopoly. What wonders we miss because of this.
My high school physics teacher. She taught me the importance of being a good human being. And that being kind and empathetic to others is the best thing a person can do. That honesty and integrity are more important than winning. And she also taught me elementary physics.
I set the zoom level to 130% in Firefox for this site only. It is persistant. I don't have to do it every time I visit the site. And it doesn't effect other sites.
Here's what I think likely happened: your friend talked to other people who went through tragedy. He noticed something common in their behavior. It can be something so subtle that it's invisible to most people, but your friend notices these kind of things. Then when he talked to the current person, he found the similar pattern.