Questions over Dolphins handling of Tua’s head injuries (update: Tua concussed again)(Merged)

I mean, to me it's pretty clear that if there's enough video evidence, like Tua's first concussion, then the player doesn't play the rest of the game. There is no evaluation that needs to be done further than watching the video. We obviously don't know enough about concussions to really say there's a 100% accurate evaluation/test for something like that, especially in such a short time frame after the incident.

Could this lead to a slippery slope, where a guy has a foot injury, gets up and stumbles and then falsely gets removed for a concussion? I guess, but if you really care about player safety then it shouldn't matter. And Tua exhibited multiple signs other than just stumbling anyway.