Unless you're calling them in a tight loop (meaning no other significant code, where the overhead of the call is significant) thousands or hundreds of thousands of times, don't worry about it. The difference is likely going to be under a microsecond, so it's not worth fretting over. Simply make the best architectural choice...
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.