Yes, I know they're work related. I'm raising the point that the emissions may or may not be necessary for their positive influence on society. For instance, I

Yes, I know they're work related. I'm raising the point that the emissions may or may not be necessary for their positive influence on society. For instance, I think we'd have a hard time substantiating a claim that people only use private jets when the added productivity (or satisfaction, comfort, etc.) increases their positive influence by an amount proportional to the extra emissions of their private jet flight compared to a normal commercial passenger flight.