You never know when someone might challenge you to a game of rock-paper-scissors. Something as important as riding shotgun or not having to pick up a check might be on the line, so you need to have more than just luck on your side.
Scientists at Zhejiang University in China have just published the results of the first large-scale study of the classic game, The Washington Post reports, and they discovered that most players actually follow a pattern. The researchers found that while you can't predict whether your opponent will start off by choosing rock, paper, or scissors, you can assume that if they win, in the second round they will likely use the same play. If they lost, they will probably switch "in a clockwise direction," so rock becomes paper, paper turns into scissors, and scissors morph into rock.
It appears as though players follow a cyclical pattern, which The Washington Post's Caitlin Dewey says "means sneaky players can use 'conditional response,' a reaction to a specific stimulus, in order to optimize results." The researchers are now more fascinated than ever with rock-paper-scissors. "Whether conditional response is a basic decision-making mechanism of the human brain or just a consequence of more fundamental neural mechanisms is a challenging question for future studies," they said. Catherine Garcia
Super Bowl 50 started off with a bang, as Lady Gaga sang a beautiful rendition of the National Anthem. In an earlier interview with the NFL Network, the pop star said performing at the Super Bowl was an "honor" and "a total dream come true." Catherine Garcia
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The United Nations Security Council condemned North Korea on Sunday for defying international warnings in launching a long-range rocket that many believe is a cover for a test of a ballistic missile that could reach the United States mainland.
All 15 Security Council members approved a statement at an emergency meeting emphasizing that using ballistic missile technology violates four resolutions, The Associated Press reports. The group also vowed to adopt a new resolution soon with "significant" sanctions for North Korea. Julie Kliegman
In a Monmouth University poll released Sunday, Donald Trump leads the Republican field with 30 percent of the support from likely New Hampshire primary voters. Marco Rubio and Jeb Bush are tied for 13 percent, with Ted Cruz notching 12 percent.
On the Democratic side, Bernie Sanders leads Hillary Clinton, 52 percent to 42 percent.
The poll's margin of error is 4.4 percentage points. On Tuesday, New Hampshire will be the second state to vote in the primaries. Julie Kliegman
Bernie Sanders distanced himself Sunday from "Berniebros," a wide-ranging term that some have used to describe sexist supporters of the Vermont senator.
"It's disgusting," he said on CNN's State of the Union. "We don't want that crap. Anybody who is supporting me and doing sexist things, we don't want them. I don't want them. That's not what this campaign is about."