It's only an anecdote, but when I was fifteen I was very confident in my insights - and two decades later, I have completely different insights. It turns out my

It's only an anecdote, but when I was fifteen I was very confident in my insights - and two decades later, I have completely different insights. It turns out my fifteen-year-old self was a comical little prat after all. You might be relatively consistent in your beliefs over time, or you might be like me. Just be aware that right now you can't be certain of either.