Make brain rot expensive.

Brain rot is what people call the cognitive fog that sets in after weeks of vertical-video grazing — the inability to read a long article, the urge to swipe away from anything that does not pay off in three seconds, the half-memory of an evening spent inside a feed with nothing recoverable from it. Oxford University Press picked "brain rot" as its Word of the Year in 2024, defined as the "supposed deterioration of a person's mental or intellectual state, especially viewed as the result of overconsumption of material considered to be trivial or unchallenging." It stopped being a joke about teenagers and became how millions of adults privately describe their own attention. The format is the active ingredient. Short-form video — TikTok, Instagram Reels, YouTube Shorts — compresses the variable-reward loop that long-form scrolling already exploits into a 15-to-60-second cycle. Gloria Mark's research at UC Irvine ("Attention Span", 2023) tracked average attention span on a screen falling from roughly 2.5 minutes in 2004 to 47 seconds in the early 2020s. Mounting fMRI work — including Chao et al. (NeuroImage, 2024) on short-video addiction — finds altered activity in the orbitofrontal cortex and default-mode network in heavy users, the same circuits implicated in other behavioral compulsions. The architecture is not accidental. Recommender systems run thousands of experiments per day to find what keeps a thumb moving, and the metric they optimize is the one that produces the fog. Willpower loses to this for the same reason willpower loses to other behavioral compulsions: present bias. The cost of an hour in Reels is paid in the future — the book you cannot finish, the conversation you cannot hold, the focus you cannot summon at 10am the next morning. The reward is now. Kahneman and Tversky's prospect theory (Econometrica, 1979) showed losses are felt roughly twice as sharply as equivalent gains, which is exactly the lever a stake pulls. A $5 forfeit lands in the present. So does the next swipe. Now they are weighed against each other on the same timeline. That is the entire mechanism. Screen Time and Digital Wellbeing already count your minutes; Lockin attaches a consequence that cannot be dismissed with a tap.