The twins are here.
If read what specialists have said since and it’s all ifs and maybes like I said “if” he felt the effects and chose not to state it it’s a problem. If it’s was unknown to him and not examined at half time there’s nothing that could be done either.
It’s good our “friends” in Boston could clear it up though for any future issues.
There is two reasons for this - the first is the Dunning-Kruger effect
This perfectly explains how someone like you can be so absolutely sure of yourself in this thread while the most informed and educated people on the subject still talk with some doubts.
The second thing is that how people of science and people of ignorance talk are entirely different. People of ignorance tend to see the world as very black & white. The state opinions as facts. The ignore information which questions their viewpoint. People of science are the exact opposite. They rarely state anything in absolutes as they deal in probables. If someone online says "Karius buckled under pressure" that statement is based on what? What tests have been conducted? What medical research supports this? What knowledge, training, experience makes this opinion valuable?
Whereas when the expert in a field says "it is probably this" it simply means "this subject is so complex with so many variables that nobody can state with absolute certainty what happened. However, given all the evidence available, my 7 years studying medicine, my 20 years studying head trauma and the thousands of similar cases I have seen, the most probable answer is this".
Never confuse the doubt in the words of an expert as meaning they don't know - it just means they aren't ignorant enough to rule out every other possibility as you have throughout this thread.