Which has a larger carbon footprint:
An office that uses a photocopier or an office that uses carbon paper?
How much difference does it make if you’re using the carbon paper in an electric typewriter as opposed to a manual one?
How much less is the environmental impact from being able to proofread on the screen before printing out and making your copies (which I’m assuming is itself lower impact than printing multiple copies … but maybe I’m wrong)?
How do we pin down the relevant impacts of the manufacture of the computer and printer and photocopier compared to those of the manufacture of the typewriter and carbon paper?
And what of dittos?
(You young people will need to do a little research to figure out what the heck I’m talking about. Perhaps on your way to doing it you can get offa my lawn!)