Where Do We Lose the Shelf Space & How Much Do We Lose?

"Where Do We Lose the Shelf Space & How Much Do We Lose?" The Idea Logical Company / Mike Shatzkin.
New York: Idealog.com, August 8th 2010.

"This is a bit like trying to do a weather forecast based on one’s confident knowledge of climate change. The two are related but there are local factors in addition to global ones."