Stop arguing and cut emissions.

The expert and policy communities have invested enormous effort in debating what greenhouse gas (GHG) emissions target to aim for, or which decarbonization policies and technologies should be mandated or banned. Because multiple trajectories can achieve similar targets and timelines, some scenario analysis is useful. However, with many players involved, it will be impossible to remain on anyone's optimal trajectory. As one of the world's largest contributors to the climate crisis, the US should stop arguing about perfect solutions and get on with reducing emissions in ways that are feasible and affordable.