In today’s segment of the Uncommon Knowledge interview with Silicon Valley entrepreneur T. J. Rodgers, I present the global warming policies of Al Gore, John McCain, and Barack Obama, asking T.J. for a critique of each. Obama’s cap-and-trade policy, to offer a brief sample of the conversation, strikes T.J. as—well, as less bad than it might have been.

I’m not completely hostile to it. As a matter of fact, Obama’s way of stating it probably captures free markets better than the stuff I heard from the Environmental Defense Fund yesterday [at a conference Rodgers attended]…. If we have to do something, a cap-and-credit of a modest level—five dollars per ton of CO2 emitted, while leaving alone the market below the cap—may be the way to start to understand the problem [of global warming] better. But if we come in with something doctrinaire—less Obama-like and more Hillary-like, or more Al Gore-like—thou shalt do the following—then we could mess up the economy and hurt a lot of people.

As for Gore and McCain? T. J. Rodgers doesn’t suffer foolishness gladly.