Unless i'm misunderstanding the intent, the above usage sample doesn't require use of SFINAE. If you only want to statically assert the type of Type you can just use something like this.
In my comment I said that you don't typically use the results of these predicates as values for an if, and this is why.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.