Rite: We simply are unaware of our knowledge, our skills and our ability to do things. And that leads us to an endless series of mistakes. My friend dave noddig says, investing is a problem that's been solved. He's absolutely right when it comes to investing. Own a broadly diversified portfolio of long, low cost indexes,. A re balance annually. See in next year. There it is. I's all of investing in two minutes. People continue to out perform their bench marks. Why is that? The answer is because we're oblivious to all the things we do that undercut that simple truism. If humans would be less oblivious to these things, the whole