There are a couple of ways. One might be that the experiment didn't really test the hypothesis due to poor design. Another might be that there are other factors which are masking the effects predicted by the hypothesis.
Finally, there's also the possibility that the experiment was done by Dr. Fumblethumbs, whose experimental error bars are so large that none of his experiments actually mean anything.
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.