Moustafa wonders: Why do New Zealand currently have the most dominant rugby team ever? The Economist breaks down what makes the current All Blacks side (as the New Zealand national rugby side is known) the most dominant ever and summarises it, simply, in them being able to “run incisively. And they excel at the dirty work.” Up until Ireland beat them in Chicago on 5 November, the current New Zealand side were on an 18-match winning streak on the back of winning the 2015 World Cup. Niven Winchester, an MIT economist who developed a predictive model, says the side is the most dominant ever. His model shows that the current cohort can lay claim to being statistically dominant in most aspects of the game, and “great” by having managed to win the World Cup twice in a row. So what makes them win? New Zealand have the highest percentage of clean breaks (the number of times an attacker bursts through the defensive line) and the most meters run with the ball. They also managed to win more turnovers than any other team. Here are the highlights from when Ireland snapped New Zealand’s winning streak (runtime 06:27) and then when New Zealand got their revenge in Dublin two weeks later (runtime 03:50).