Earlier quoted context omitted.
By “significant” I take you to mean, “causing enough harm to be noticeable.” I don’t know the answer to that. Consider that chainsaws are only one of many polluting tools that people use in forests, e.g., snowmobiles, generators, of course cars. There are many non-petroleum pollutants as well, like lead ammunition and trash. I believe it’s a useful practice to reduce harm from each of these as much as possible. That…
A key piece of advice in performance optimization is to profile first. The same should apply to environmentalism. Some interventions have orders of magnitude more impact than others, and we shouldn’t pretend otherwise
Both in programming and in environmentalism.
'The big issue lies not with X, but with Y, but Y is not my area/too big for now/etc. So I'll do nothing'