"I hear and I forget. I see and I remember. I do and I understand." Confucius
Some conspiracies: https://www.europhysicsnews.org/articles/epn/pdf/2016/04/epn2016474p21.pdf
http://www.collective-evolution.com/2017/09/03/study-suggests-that-apple-deliberately-sabotages-old-products-iphone-slow-peaks-after-every-new-release/
