Pi can be rounded. It's infamously difficult to compute externalities in any meaningful sense. Even more difficult to implement a fair and actionable policy for it. You can google "accounting for externalities" and read a bunch f articles and academic papers on the subject, which has been debated for decades.
Beyond fines for dumping chemicals in rivers, and carbon taxes, etc, stronger EPA, etc, I don't really have any good ideas for codifying a real actual plan into law. Probably easier to raise corporate tax rates up a few points from 21% to whatever and use it to fund green energy and cleanup projects etc, rather than change accounting methods to try and capture the costs that way.
Pi can be rounded. It's infamously difficult to compute externalities in any meaningful sense. Even more difficult to implement a fair and actionable policy for it. You can google "accounting for externalities" and read a bunch f articles and academic papers on the subject, which has been debated for decades.
Beyond fines for dumping chemicals in rivers, and carbon taxes, etc, stronger EPA, etc, I don't really have any good ideas for codifying a real actual plan into law. Probably easier to raise corporate tax rates up a few points from 21% to whatever and use it to fund green energy and cleanup projects etc, rather than change accounting methods to try and capture the costs that way.