text:  There's 100 jobs in the labor market. You bring in 10 immigrants, so 10 natives are going to lose their job. So we call that the skating rink model. Skating as in hockey. Cards originally from Canada. So am I. So we are required to make this reference. In hockey, you can swap out players, but you can't have more than six on the ice. That was the assumption with immigration. Each new immigrant would knock a native off the ice.