You open an app to check one thing. An hour later, you are still scrolling. You cannot quite say how you got here. Each post, video, and clip came from your feed.
feed
The stream of posts and videos an app shows. They come one after another.
Sources
Sean Parker, Facebook's first president (Axios, 2017)
Tristan Harris, former Google design ethicist
Eli Pariser, The Filter Bubble (2011)
Aza Raskin, inventor of infinite scroll
Eli Pariser, TED Talk, 2011
Neal Mohan (YouTube chief product officer), CES, January 2018 — 70% of watch time driven by recommendations: https://www.tubefilter.com/2018/01/11/youtube-most-watch-time-driven-by-recommendations/
Tim Wu, The Attention Merchants (2016) — Benjamin Day and the New York Sun, 1833
Vosoughi, Roy & Aral, 'The spread of true and false news online,' Science 359:1146-1151 (2018): https://politics.media.mit.edu/papers/Vosoughi_Science.pdf
Brady, McLoughlin, Doan & Crockett, 'How social learning amplifies moral outrage expression in online social networks,' Science Advances 7, eabe5641 (2021): https://www.science.org/doi/10.1126/sciadv.abe5641
Nir Eyal, Hooked: How to Build Habit-Forming Products (2014) — the four-step Hook Model
Bianca Bosker, 'The Binge Breaker,' The Atlantic, November 2016 — source of the Harris 'thousand people on the other side of the screen' quote used on screen 41
The Jim Rutt Show, Episode 38, 'Tristan Harris on Humane Tech' — source of the 'thousand engineers behind the screen' quote used on screen 18
Eli Pariser, interview with Lynn Parramore (2010) — source of the 'personal ecosystem of information' quote used on screen 22, currently miscredited to the 2011 book
Hannak et al., 'Measuring Personalization of Web Search,' WWW 2013 — the measured size and causes of search personalisation, needed to support the corrected screen 39: https://ccs.neu.edu/home/ancsaaa/old_webpage/filt.pdf
A counterweight source on contested echo-chamber effects, e.g. Internet Policy Review, 'Should we worry about filter bubbles?': https://policyreview.info/articles/analysis/should-we-worry-about-filter-bubbles
Read end to end and corrected: August 9, 2026. Numbers checked: August 9, 2026.