Chapter 2 of the video (5:29)

The questions asked

  1. How often do you keep prompting — "just one more prompt" — past the point you meant to stop? (5:30)
  2. How has your sleep changed since you started using AI heavily for coding — later bedtimes, racing thoughts, trouble waking? (5:30, 5:55)

The numbers

  • 46% regularly blow past their intended stopping point — often or every single day, not once in a while (5:55).
  • Among those who overshoot: 58% report sleep changed moderately or more (5:55).
  • Among those who stop when they meant to: 17% (6:23).
  • This is the strongest relationship in the entire survey (6:23).
  • Caveat stated explicitly: this does not prove AI wrecked anyone's sleep — causation could run the other way or come from something else entirely; the two simply appear together (6:23).
GroupSleep changed moderately or more
Kept prompting past stopping point58%
Stopped when intended17%

The mechanism — variable reward

Dr. Courtney Tolinski's explanation (6:23, 6:53, 7:16):

  • AI prompting is a variable reward system, structurally like a slot machine: sometimes a reward, most of the time not.
  • The anticipation build-up is what keeps you pressing the lever.
  • Each prompt carries a chance of the perfect solution; most outputs fall short, which produces the "let me just do it one more time" loop.
  • Chasing the perfect solution induces dopamine, which feeds the addictive cycle.
flowchart LR
    P["Send prompt"] --> R{"Perfect result?"}
    R -->|"rarely"| D["Dopamine hit"]
    R -->|"usually"| N["Almost there…"]
    N --> A["Anticipation build-up"]
    D --> A
    A --> P