You may be thinking of his book by that same name. https://www.amazon.com/Cognitive-Surplus-Technology-Consumers-Collaborators/dp/0143119583 https://www.amazon.

You may be thinking of his book by that same name. https://www.amazon.com/Cognitive-Surplus-Technology-Consumers-Collaborators/dp/0143119583 https://www.amazon.com/Cognitive-Surplus-Technology-Consumer... It looks like it's also summarized as a TED talk (I've not seen it) https://www.ted.com/talks/clay_shirky_how_cognitive_surplus_will_change_the_world https://www.ted.com/talks/clay_shirky_how_cognitive_surplus_...