Domino is a popular game in which players lay down domino tiles in rows and try to knock them all over. The tiles are rectangular and have spots, called pips, on them. Some of the pips have numbers; others are blank. A domino’s value is determined by the number of pips it has, and the more pips a domino has, the higher its rank or weight. A domino is normally twice as long as it is wide. It can be stacked in any way, with straight lines or curved lines, grids that form pictures when they fall, or even 3D structures such as towers and pyramids. The physics of how a domino falls is interesting. A physicist at the University of Toronto, Stephen Morris, explains: “When a domino is standing upright, it has potential energy based on its position. As soon as you push on it, the potential energy changes to kinetic energy—energy of motion.” When a domino has enough kinetic energy, it will flip over. This creates a chain reaction, with each domino pushing on the next until all of them fall over. As you play the game, you may notice that certain types of dominoes are favored by other players. This is because some have a greater ability to influence the outcome of the game. For example, some players prefer to use a double-six set of dominoes because they can make matching ends (one’s touching other one’s, two’s touching two’s, and so on) that allow for scoring. The player with the highest total sum of pips wins the game. Domino can also be a metaphor for personal development. Good dominoes are tasks that lead to a bigger goal. These tasks can be challenging and require a large chunk of time and focus, but when they are completed, they will have a positive impact on your life. Think of these tasks as the foundation for your domino chain, and focus on completing them first. Another aspect of domino that relates to personal development is listening to and responding to feedback. Domino’s CEO, Brandon Doyle, has made it a priority to listen to employee and customer feedback in order to make changes in the company that will benefit everyone. This has helped to improve customer service and increase productivity. It’s an important lesson for businesses of all sizes to learn.