Unneeded features: Are membrane-flushing necessary?

Yes, membrane flushing is necessary to keep it in good health. However, auto flushing is not a must for a system. With regular flushing, the membrane can last 2-4 years.

If you just change your pre-filters regularly, the membrane life would further improve.

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.