Policy Paradox: The Art of Political Decision Making by Deborah Stone
It is the quintessential challenge facing the public service, and applies to policy, management, and our daily work. I needn't remind you that I've always been a proponent of greater greater creativity in the public sector and moving away from the status quo.
"Only two things limit the number of and kinds of alternatives considered: poverty of imagination and considerations of practicality. " (p. 245).
Unrelated, I really liked the chapter on rules (and how to make them in a policy environment). In particular I thought the book's treatment of the primary tension in rule-making (the balance between precision and flexibility) to be well articulated and a solid reminder of what policy makers should be consider and strive for whenever crafting policy.