The problem with his argument is not that the economy can't grow using less resources, that I agree with, it's that he equates a fixed supply of resources on th

The problem with his argument is not that the economy can't grow using less resources, that I agree with, it's that he equates a fixed supply of resources on the one side with a steady or falling (but non-zero) rate of consumption on the other side. However there are some resources that don't just replenish themselves and once they're gone, they're gone. So rate of consumption would have to trend to zero to be sustainable, not just stay flat.