Excellent Post and Video From Jason Snell.
As Steve Jobs said:
When we were an agrarian nation, all cars were trucks, cause that’s what you needed on the farm. But as vehicles started to be used in the urban centers, and America started to move into those urban and then suburban centers, cars got more popular and innovations like automatic transmission and power steering and things you didn’t care about in a truck as much started to become paramount in cars.
... Jason takes that analogy from 6 years ago - and considers where we are when it comes to the PC world. This because in the Apple world there is a LOT of chatter about 'where is our MacPro'.
Me - I am one of those in the middle. It is going to take me a loooong time to be pad/phone only - BUT - for what I need to do on a computer - I don't need those really big beasts.