Someone asked a question in a company Slack channel that wasn't addressed to me, and it sent me off to Perplexity asking what I could actually do about the environmental cost of using AI constantly. I made a few changes that week and forgot about it. Eleven months later I went back and checked which ones survived, and found that the habit I'd dropped was the wrong one, the habit I kept religiously does nothing at all, and the two changes that genuinely mattered were ones I'd