For years, caring governments and thoughtful corporations have communicated the idea that we’re all in this together, that if we each just do our bit we can solve this global warming mess. Duke Energy, a utility company that depends heavily on coal, points out that “saving the environment can be as easy as changing a light bulb.” It’s a gentle, brotherly tone. But there’s something in the subtext here too — a warning: “Let he who is without sin cast the first stone.”

In economics this would be called a barrier to entry, an obstacle that makes it difficult to gain access to a given market. In this case, rather than economic, the barrier is philosophical. If you aren’t taking mass transit, you have no right to oppose drilling for oil in the Arctic. Until you’ve cleaned up your act entirely, you’re not entitled to criticize the major oil companies for cashing in our children’s future.

Whether this “guilt barrier” is deliberately constructed or just innate to our psyches, it’s being exploited by the fossil fuel cartel. Its members are content to have us feel guilty, particularly if it contributes to a sense of helplessness. Where once companies such as Exxon Mobil denied that their products were causing dangerous levels of pollution, now they claim it is impossible to switch from them. “Look at your life,” this thinking goes. “You’re up to your neck in it. You really want us to turn off the tap?”