What you are seeing now is a technology game. Plastic skates & fiberglass stick shafts. Its a completely different game. Years ago you had steel blades & leather boots. Gloves were leather. The sticks were entirely wood. You had to be twice as strong to play. The skates were way heavier. You had to be able to play without stopping. With steel blades if you stopped, you lost alot of stamina starting back up. Players didn't need helmets because the puck was kept down by the sticks. Sticks were not even curved. The player of today does not have to carry the weight players years ago did. The NHL of the past had strict offsides. NHL changed its rules to accomodate the players. There is no 2 line pass & line offsides are rarely blown. I've seen players offside by a yard or more uncalled. The rules were changed to improve the flow. Teams were deliberately pushing people offside to disrupt the game. The concussion problem is the NHL's inability to make the rinks bigger. There is so little room players are getting concussions from collisions with teammates. What you are seeing is tech hockey.