Louise Bedford, author of many books like "Charting secrets" and "Trading Secrets", asked something like this from her audience: "if you think you are an 'above average', raise your hand!".
19 people out of 20 raised their hands.
So what lesson can we learn from this? Why is it that 9 people out of 10 loosing money on trades?
Many times, people with above average intelligence believe they are not so good because they understand how little they know.
Even Aristotle who was one of the most influental in building the foundation of Western phyilosopy, who also did research in botany, zoology, phyiscs, astronomy, chemistry, meteorolgy, geometry and many other fields on science such as politics or economy, even he thought how little he really knew.