[cnn-photo-caption image=http://i.cdn.turner.com/cnn/2010/OPINION/06/21/frum.oil.reality.check/tzleft.david.frum.ckennedy.jpg caption="David Frum: President Obama didn't level with people about the real cost of getting off oil" width=300 height=169]
President Obama is right: We can take the U.S. off oil. But he omitted to mention the fine print: Doing so will be slow, will be expensive, and will involve huge dislocations in American lifestyles and business.
When politicians talk about energy, they like to talk about magic machines: cars that run on hydrogen fuel cells, electricity that flows free from solar panels on the roof.
But when change comes, it will not come through magic. It will come because changes in relative prices have induced changes in behavior.
We've seen such changes before.
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