If we can recognize that change and uncertainty are basic principles, we can greet the future and the transformation we are undergoing with the understanding that we do not know enough to be pessimistic. —Hazel Henderson1

Being agnostic about the distant future means being honest: we have to admit the limits of our understanding, approach all planetary challenges with humility, and recognize that advances, setbacks, and failures will all continue to be a part of our evolution and that there can be no assurance of (however defined) ultimate success, no arrival at any