>> When PHB gets a thought he automatically assume it is a good one.
You're right.
No doubts, never – it is an indispensable condition for every PHB to be a PHB.
And faith is always stronger than knowledge - this is why you can't win arguments against PHBs.
I think there is a niche market too for 100 inch tablets, that you can hang on your living room wall, and that you can operate with big sweeping motions.
Bigger than a phone and smaller than a tablet? I remember those. You mean the bricks we had to carry around before mobile phone technology advances through the 1990s. Today, those would serve an extremely small market niche.