If trading was so simple, we'd all be rich. Virtually everything appears simple or obvious in hindsight, but getting to the point where you can view something like a profitable trading strategy in hindsight is a lot of work IMCO. Go read the first post in the "Ghost of If You Can Draw A Straight Line" thread and see dbphoenix explain how he had to dumb down his approach even for some readers motivated to follow his original IYCDASL thread.
Clearly the "simple" isn't always so simple. When asked why his theory of relativity was so complicated, Albert Einstein stated that theories should be made as simple as possible, but no simpler.
I think people who keep proclaiming the simplicity of successful trading suffer from hindsight bias.
