PITTSBURGH — Blocking shots is a matter of playing the angles, and the 50-50 percentages. “I’d say it’s about half and half, technique and courage,” Pittsburgh Penguins defenseman Alex Goligoski said. And maybe there should be a sliver of that percentage saved for insanity, too. A defenseman needs something of a daredevil spirit to hit the ice in order to block a shot that’s being cranked up by a powerful player using a curved stick that can propel the puck at up too 100 miles per hour. “When it’s coming, I don’t even know if it’s about courage,” defenseman Mark Eaton said. “You do what you have to for the team and don’t even give it a second thought. The moment you do second guess it is when you can get yourself in trouble.” To a man, the Penguins defensemen say that shot blocking is just part of their job description. You lay down in front of speeding pucks, because that prevents them from getting to the goal.