Why a man would pretend he didn't know a female even when she addressed him by full name and then he changed his phone number?

Obviously, because he's avoiding you. What other possibility is there? Forget him --- if that's what he did.

There are many other fish in the sea, who will know you and not change (his) phone number.It's called "rejection". We all face it --- deal with it.

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.