There are also a lot of indirect carbon costs. Doing the calculation accurately is a recursive time-series analysis where you have to trace how every object was

There are also a lot of indirect carbon costs. Doing the calculation accurately is a recursive time-series analysis where you have to trace how every object was used to create other objects through the whole earth’s supply chain. So having a kid may build a hospital that requires a truck that requires human to be trained… that requires humans to create paper training materials.