First, I would put the birth of New World computing at 2007, with the introduction of the iPhone. You could even arguably stretch it a bit further back to the birth of “Web 2.0” applications in the early 2000s. But it’s brand new. If computers in general are young, New World computing is fresh out of the womb, covered in blood and screaming.
This is how things change. The iMac killed the floppy and all the other legacy ports we *had to have* only to introduce a brand new way of thinking about connectivity. The iPhone destroyed my own notion of what I needed in a platform and the iPad is currently destroying (that is in the present progressive tense for a reason) the idea of the "desktop metaphor." I am daring people to say it isn't the right direction.