What is expire header and how to achive them in ASP.NET and PHP?

Obviously the disadvantage to the expire header is what you already said, if you make a change then the user won't receive the new version until there's expires.

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.