fizzdom.com smartphone iphone no new thoughts mary meeker tech guru 

• “People with obsessive-compulsive disorder (OCD) feel the need to check things repeatedly.” (nimh.nih.gov)

• “Smartphone users have developed what they call 'checking habits' — repetitive checks of e-mail and other applications such as Facebook." (http://www.cnn.com/2011/HEALTH/07/28/ep.smartphone.obsessed.cohen/)

• Tech guru/venture capitalist Mary Meeker presented the "150 times a day" estimate (probably high — the number, not her) in this 2013 Internet Trends report (p.52): http://www.kpcb.com/insights/2013-internet-trends

• Watch comedian Louis C.K. — one of the sharpest comedic minds around — riff about smartphones with Conan: