I wonder about the shelf life of RBs these days, especially ones who relish the contact. Emmitt Smith chose discretion as the better part of valor in getting out of bounds at the expense of another yard or two at the end of a positive play. He lowered his head when he had to but not unnecessarily. The Gurley object lesson could factor in too. If Elliott's not due for a new deal for another two years, I could see some of the tread being worn off the tires by then. No wonder the Dallas "brain trust" is in no hurry to sign him to another deal.