I agree that Solow is not entirely correct about substituting replacing resources. However, I think a major flaw in Solow’s reasoning is that he does not acknowledge the difference between renewable and nonrenewable resources. His theory about substitution works for nonrenewable resources, but, like you said, renewable resources can replenish themselves if they are given time. It is irresponsible for humans to be forced into substituting a renewable resource because we could not control ourselves.
