mmh sure. I think your take is extremely optimistic, you mention The World as if there were a collective direction, but from where I stand CO2 emissions look li

mmh sure. I think your take is extremely optimistic, you mention The World as if there were a collective direction, but from where I stand CO2 emissions look like the ultimate example of the tragedy of the commons. Also the side effects of benefits have large delays, so economics are very dependent on the rate of discount you use for your net-present-value calculation...