warnings heeded help needed

I think the lesson is that you should listen to other peoples warnings. I think this is the lesson because they showed what happens when people didn't listen to the warnings and it resulted in disaster. One of the examples was when the engineers said that the O rings weren't very good and then the people didn't listen to the warning and the spaceship ended up exploding and killing seven people. If someone wasn't listening to what I knew I would probably give them evidence and try to show them the result of what would happen if they didn't listen to me. How would you get someone to listen to what you know?