Ever thought about why an ice cube floats? Or, for that matter, an iceberg? Why does a pond freeze from the top down, rather than the bottom up, as it would if it were filled with almost any other liquid? And what does any of this have to do with change management?
It has to do with crystallization. Not of molecules, but of ideas, specifically ideas about how beneficial change is, how possible it is, and how committed to inging it about one is. Like water molecules, ideas about change (and changes, themselves) crystallize from the top down, from CEO to management to cubicle or shop floor.