Is there a significant difference between these waveplate configurations? In other words, why chose one configuration over another?

A6.) In some cases, it may simply be a matter of personal preference. In others, such as in maximizing SOP resolution, the ::-wave configuration would be preferred. For the case of maximizing uniform SOP coverage around the Poincar sphere in the shortest period of time (e.g. , using the MPC-1's scramble mode), the ::-waveplates would be favored.

More.

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.