The thesis: "Poorly funded groups and companies loosely organized around basic shared ideas can change society, often by outmaneuvering governments or mega-corporations."
"The title is based on the contrasting biology of spiders, which die when their heads are chopped off, and starfish, which can multiply when any given piece is severed -- a trait the book's authors posit is shared by decentralized entities ranging from Alcoholics Anonymous to Al Qaeda to Wikipedia."