One possible solution would be to add a 4th button to the group that indicates that the property is not set. You could have that one be the default when you need an 'indeterminate' default setting. This would allow the radio button group to start out with a selected radio button.
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.