Books like Cognitive Surplus
Clay Shirky
Cognitive Surplus is 242 pages, about 4 hours 26 minutes at 250 words a minute.
9 books to read next
How long each takes
Program or Be Programmed 2.8 h 
Kill All Normies 2.2 h 
Web Technology 4.0 h 
Internet 16.4 h 
Twitter and Tear Gas 6.3 h 
Inventing the Internet 4.9 h 
Glitch Feminism 3.5 h 
Networks Of Outrage And Hope Social Movements In The Internet Age 6.0 h 
Alone Together 7.3 h Bar height shows length. Estimated at 250 words a minute.