I think I've learnt that even the well informed and smart people only have a vague clue about what the future will hold.

Even the guys who guess right are only shown to be right in retrospect. Things can change in the blink of an eye and everything you thought was your comfort zone becomes a barren and rock strewn field.

The strange thing is that technology is like fashion. What was thought to be long dead comes back to life and is touted as the shiny, new and the next big thing!