The problem is, most people are trying to find the simplest way to get from point A to Point B in a straight line in the trading world, which is built on the principle of constant vs variable. In my experience this is a recipe for insanity. You're choosing to remove integral pieces of the situation while believing you're still observing the entire situation. It's similar to ordering a large pizza cut into 12 even pieces, then removing multiple pieces and still calling it a whole pizza. It's insane and works until it doesn't, where the operator will then try to do the same thing with something else. And so the cycle is self perpetuating.
Trading's for those who learn independently. Everyone else is just blind.