Confession: within 30 seconds of hearing about David Willett’s expenses claim for changing light-bulbs I’d cracked the inevitable “how many Conservative MPs does it take to change a light-bulb…” joke to my long-suffering partner.

This book looks at what makes ideas “stick” – why some ideas spread easily whilst others don’t. Being able to communicate effectively has become increasingly important for public managers in democratic states. “A medium-sized ‘butter’ popcorn at a typical neighborhood movie theatre contains more artery-clogging fat than a bacon-and-eggs breakfast, a Big Mac and fries [...]