Because we’ve been running over the goalposts like a goddamn freight train. First it was about avoiding mass extinctions. Oops, too late. Then it was about saving coral reefs. Oops, too late. Then it was about avoiding massive worsening chaotic weather systems. Oops, too late. Now it’s about reducing the severity of the droughts and floods. Now it’s about keeping the oncoming death toll in the hundreds of millions instead of billions.