How do we know what we know?

Experiences. That's all it is. If we see fire, we know it is hot. Maybe we've seen people burn or suffer from it, or maybe we've gotten burnt and we already know what's going to happen. Throughout our whole life we have experiences that essentially teach us a lesson. We do wrong, we get punished we learn. That is how I know what I know, some people get too many chances, however, and they may never learn. They believe that what they know is the right thing.