If you had 18 minutes free, what would you do? It would be a good idea to 41 those 18 minutes watching a TED talk. These are thought-provoking speeches 42 can inspire us and teach us many things. TED, which 43 Technology, Entertainment, Design, was established in 1984. Each speaker has 18 minutes to share his or her ideas. Starting in 2007, videos of the talks have also been available for free online. 44 , these videos have been watched more than one billion times around the world. The videos have been a great success, helping to share innovative ideas with anybody who has a little free time and wants to watch one. Watching one of these videos is like standing on the shoulders of a giant. You can see so 45 and learn so much more. Watching one of these speeches might even help you to change the world one day.

Rock Paper Scissors (RPS) is one of the simplest games. The rules are easy to learn and anyone can play it. Although it is a game played mostly by children for fun, there are some people for whom RPS is a serious sport. But isn’t RPS purely a game of luck? Not according to the experts. In fact, there are numerous strategies that can be used to increase our chances of winning. Evidently, it all comes down to human psychology. Most RPS players use patterns of “throws” without realizing it. For example, people throw rocks more often when they are mad, and throw scissors more often when they are winning. After playing many rounds, your opponent’s individual pattern of throws becomes quite obvious. Also, if you watch your opponent’s hand carefully, you may be able to tell what he plans to throw. Of course, advanced players will try to deceive their opponents. Players who try to use purely random throws rarely win because they end up becoming predictable in the end. If all else fails, there are conventional “mind games” that you can play to give you an edge, such as laughing when you are winning or yawning when you are losing. By annoying your opponent in this way, you may be able to break his concentration and gain a significant advantage. Above all, remember that if you want to win at RPS, you have to practice frequently. If you get good enough, you could even win a medal at the next World RPS Championship.