That lack of knowledge is not reason to just take no action--we should do what we can to control our emissions, but it is also not reason to dramatically harm our economy by adopting certain measures as outlined in the Kyoto treaty.
I agree that lack of knowledge is not a reason for inaction. However, the notion that reducing emissions can't be done without harming the economy is a fallacy. There is no requirement that emissions be reduced in stupid cost-ineffective ways. It has been shown time and again that simple energy saving measures can save individuals and businesses money. Building and operating alternative energy systems creates jobs at home. Reducing demand for imported oil by improving automobile gas mileage and replacing some gasoline with ethanol improves our balance of trade. The only economy to be harmed is that of Exxon and similar companies that refuse to change. On the whole, building a clean sustainable energy infrastructure will be very good for the economy.
