That is just absurd to me! How could someone professing to be an "expert" in the cognitive effects of mTBI (all kinds of TBI really....) not understand this!

I know that it must be difficult for laymen to understand because I try to explain it to people at work all the time. I usually try to explain that I'm having trouble when asked to do something because of the ambient noise that's present - my brain doesn't filter background sounds and stimulus the way a normal person's does. And they tend to just accept what I'm saying, allowing me to close a door, or surrounding people hush or something like that, while everyone looks at me like I have two heads. If I didn't actually produce the effect they wanted, I'm sure it wouldn't fly as much as it does. But generally speaking, shortly after getting the room abnormally quiet, I'm able to fix whatever problems they're having, so they roll with it.