Dr. James Glynn:

The legislation should be explicit around what we understand as the science. It is not so much that the science has changed or that it will hold the legislators as hostages to fortune. The methods with which gases were being aggregated into carbon budgets was no longer appropriate with the original method being used in the IPCC. The use of carbon budgets has emerged over the past five to ten years since the IPCC fifth assessment report and the old use of those methods. It would be appropriate to use the current state of the art of the science.