When Commissioner Roger Goodell spoke at an event last week in Manhattan, he made a vague, non-committal comment that continues to gather steam, more than a week later. Asked about the possibility of allowing players to smoke marijuana for medicinal reasons in states where it’s legal, Goodell didn’t rule it out. “I don’t know what’s going to develop as far as the next opportunity for medicine to evolve and to help either deal with pain or help deal with injuries,” Goodell said. “But we will continue to support the evolution of medicine.” While that hardly blazes a trial for blazing up, it opens the door for the possibility that the NFL eventually will acknowledge that rules are changing (in some states), society is changing (in more states), and players likely won’t be changing habits that, for many, currently including smoking marijuana.