Okay let me ask you this.
do you personally think that concussions can lead to brain damage? Forget studies what do you believe?
You want information about why Smith might have played while Cutler was ruled out early? That's easy. Smith passed some of the post concussion tests, when Cutler did not.
As far as Smith being cleared all week until today, he passed every test but the contact test, which is the last and most important test
Finally, you just said this thread was not about players manning up? Who you crappin man? You said