Please note that java implementation of double-checking is called "broken pattern" because it was proven as fail (for example see http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html ). To work around just use atomic operation. Follow is sample how to build thread safe singleton.
You could also consider using Suppliers. Memoize(Supplier delegate) from guava library.
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.