Some interesting quotations of famous people:

• Fooling around with alternating current is just a waste of time.
  Nobody will use it, ever.
  (Thomas Alva Edison, 1880)
• I can state flatly that heavier than air flying machines are impossible.
  (Lord Kelvin, President of the Royal Society, 1895)
• There is not the slightest indication that nuclear energy will ever be obtainable.
  (Albert Einstein, 1932)
• I think there is a world market for maybe five computers.
  (Thomas Watson, Chairman IBM, 1943)

It is great that our world had and has people with visions and people with the power to realize this visions. It is surprising that even these famous, high intelligent people had their limitations to imagine what will be possible: "It is more possible as we believe"

Doubters will lame the progress. Supporters evaluate chances to support positive visions. As long as I am not the visionary I have the ambition to be an excellent supporter.