I could never solve the Rubik's cube. What is it about this cube? The objective is to have all same-colored squares aligned in rows. So, one starts by aligning some of the same-colored squares. But then there is a catch: you need to destroy partially formed order/structure so as to further increase ordering in the cube. That is, in the intermediate steps, you need to undo what work you have done previously for reaching the globally optimum configuration. I think solving a Rubik's cube is a good measure of risk-taking mentality of people. Those who are scared to loose what they have for a better reward in distant future are unable to make such moves, and thus never solve the cube completely.
