b) a well-functioning price system will shift energy consumption to (cleaner) alternative energy sources as prices for historical extracted sources of energy rise;You guessed it - carbon tax!
On some level I think maybe I just hope this is right, because I don't really see any viable alternatives. Tyler Cowan, however, finds that the logical extension of this thesis to create a few problems of its own.
UPDATE:
Free Exchange finds Mr. Wilkinson's arguments a bit lacking. Mostly they lampoon him for assuming that we do actually have "a well-functioning price system" (this would be a price system in which the negative externalities of energy production, such as CO2-caused climate change, are properly accounted for). What I took away from Will's thesis, however, is that we NEED TO IMPLEMENT a price system such a carbon tax, in order to move forward.