Every year, the world uses a cubic mile of oil. That´s equivalent to the power output of 2500 nuke power stations.
It´s worth everyone´s while (by this, of course, I mean only the reality-based community, the ones who assume that the world´s scientists are probably not in a vast conspiracy to hoodwink the masses) to look at sites like The Oil Drum | Discussions about Energy and Our Future, to inform themselves about peak oil.
The whole point of it is that, once the peak is behind us, the vast sustained exponential growth in the use of fossil fuels will have to stop.
The truly scary point about this is the number of genuinely intelligent, practical people who imagine that BAU (business as usual) could continue after peak oil, simply by substituting electricity for petroleum.
That´s not good, because if oil gets scarce, we in the human race will have a very hard time generating enough electricity to replace oil energy.
For one thing, generating electricity requires a lot of copper. How is copper mined? With immense trucks nearly 40m tall and 50m long. Can those trucks run on electricity if the oil they use gets scarce? Nope. Ooops.
That´s just one of millions of paradoxes that relate to managing to bring about a transition from today´s BAU to the post-peak economy. Once you look carefully at how hard it is to carry out today´s activities without cheap abundant petroleum, you start to realise how much harder we need to think this stuff through. So let´s do it.



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