From coffee he wanders to idea cultivation centers, usually as informal and rowdy as the coffee house was, in which ideas are allowed to form, gather and be exchanged (especially with people with people from other disciplines). He concludes that we should think of innovation coming more from more a ruddy chaos as opposed to clean sterile serenity.
Steven Johnson: Where good ideas come from (TED)
Where Do Good Ideas Come From? (RSA)
Where Good Ideas Come from, Steven Johnson (RSA Animate)