There's a lot to chew on regarding the interview below with Ricky Williams and Dan Le Batard. I generally find Williams to be utterly fascinating, and an idiosyncratic thinker. I think he's pretty wrong about the science behind CTE, and moreover, about how science works, in general. That we now know that many aspects of science from a century ago were wrong, is a feature of science, not a bug. Science is a method, not an ultimate answer.
Save your eyes. Take breaks.