Canada is at a “critical juncture,” said ATB chief economist Mark Parsons. “Canada has woken up to the fact that the rules have changed. We’re in a rupture period,” Parsons told a Red Deer District Chamber luncheon on Tuesday. “Nobody is looking out for us anymore. We’ve got to look out for ourselves.” Fortunately, as one of the world’s biggest energy exporters Canada is well-positioned to do just that. “The world wants what we have and there is…