Hindsight · review build · data not yet validated
The majority of reading is done on displays, although the “installed base” of paper documents is still formidable.
Grader A: partial
In 2009 a large share of reading happened on screens (web pages, email, office documents; 56% of Americans used wireless internet), but books, magazines and newspapers were still read mainly on paper. E-book reading reached 21% of Americans only in 2012, and the Kindle had sold about 1.5-3 million units by end 2009. No data shows that the majority of all reading was on displays in 2009.
Test: Majority of reading on displays: not shown for 2009; screen reading well above 5% (web and email), long-form reading on displays under 20% until 2012.
Grader B: partial
Screen reading (web, email, some e-books) was a large share of reading in 2009, but books and much document reading stayed on paper (e-books 3% of trade sales). No data shows screens carried the majority of reading in 2009.
Test: Share test: screen reading >5% of reading; e-books 3% 2009; majority not shown by 2011.