Hindsight · review build · data not yet validated
Documents, circa 2009, routinely include embedded moving images and sounds.
Grader A: hit
By 2009 web documents routinely embedded video and audio: 62% of US adult internet users watched video on sharing sites such as YouTube, whose players were embedded across web pages, and 19% did so on a typical day. Office documents also supported embedded media, although printed-style documents usually did not use it.
Test: At least 20% of users encountering documents with embedded moving images: 62% of adult internet users watched online video in 2009 (Pew).
Grader B: hit
By 2009 web pages, the dominant form of electronic document, routinely embedded video and audio (YouTube embeds, news-site video).
Test: Share test: embedded video/audio routine on major web pages by 2009 (>20% of major sites); rare in word-processor files.