“Life is really simple, but we insist on making it complicated.” - Confucius
Problem solving is simple irrespective of what the problem is or what methodology you are using. But we insist on making it complicated. Sometimes tools are given some fancy names and later on recycled and marketed with another fancy name. There are good reason for that and there are bad. But we have to remember that the problem solving is simple when you look at the basics. You determine what the problem is , and agree upon the direction we want to move. Then we take small steps or experiments which move us incrementally towards that direction.
