Problem about using NSOperationQueue and NSOperation in iphone OS?

Apple's documentation for the NSOperationQueue includes this note.

Since you using NSOperationqueue,therefore you are having only two files at one time and you can merge only them because all the other threads or files are not present there.

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.