Is there ever a time when an exception can occur due to a user-invoked action and does not require letting the user know?

Sure. One common example: a window is opened which is supposed to monitor the progress of some long-running task (whose execution is independent of the window) and the window is subsequently closed and Disposed. Just as the window is being disposed, the thread whose progress is being monitored attempts to use a BeginInvoke to update its progress indicator.

The BeginInvoke will end up throwing an InvalidOperationException as a direct consequence of the user having decided to close the window at the precise moment he did, but there's no need to bother the user about it. Simply swallow the exception and move on.

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.