This is a scientific view based on examining the evidence. If you dont like the answer take it up with your education and conditioning.
Heres another expert - David Coleman’s main points agreeing with Fred
http://www.vho.org/GB/c/DC/gc46-ORIGI.html
Forty-Six Important Unanswered Questions Regarding the totally fictitious alleged Nazi “”Gas Chambers””
http://www.vho.org/GB/c/DC/gc46-ORIGI.html