What is the average life expectancy of U.V. inks?

Typically in most environments these inks will last about 5 years. In environments that have near constant sun exposure, that may be reduced to as few as 3 years, and where there is little sun exposure, the ink will last indefinitely. More.

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.