Key to good policies? It's a matter of time
Seeing time as a stream with three aspects is a handy tool in assessing public policy options

When I studied public administration at Harvard University back in the 1980s, I picked up a powerful conceptual tool that has proven a handy guide in assessing public policy options.
Policymakers should think in time, seeing time as a stream: the present as the future of the past; the future as emergent from the present; and the future as how it may be when it becomes the past.
In tackling a current problem, we must know in the first instance how it came about. Reflecting on "the present as the future of the past" means going back to the reasoning of former policymakers, and the context in which the policy was made.
Without this historical perspective, policymakers could be lost in the labyrinth of choices for solutions.
Take waste management, for example. How come former policymakers stuck to landfills for so long when the world had known for a long time they left permanent and poisonous scars and were not sustainable?
Making the history clear helps in explaining to the public why we should change course.
The second dimension is to see "the future as emergent from the present". Every policy has its impact. The present situation is the starting point for change.