How do they know with certainty?

[AVGWarhawk]

How do they really know? Does this look like another man-made panic to constitute a raise in oil/gas prices? I'm thinking so

The world is heading for a catastrophic energy crunch that could cripple a global economic recovery because most of the major oil fields in the world have passed their peak production, a leading energy economist has warned.

Since when does an energy economist become a geologist and make predictions on oil output? Let the panic begin..........

http://www.independent.co.uk/news/sc...t-1766585.html