
Lightweight models can infer interruptibility from coarse activity and calendar cues without sending raw data to servers. This reduces latency and preserves privacy. Start with heuristics, validate with local feedback loops, and only consider federated learning when consent, safeguards, and transparent update mechanisms are firmly in place.

Collect the least necessary data for the shortest possible time. Prefer binary signals over raw streams, strip identifiers, and aggregate where feasible. Offer a red button that immediately halts collection and clears recent context, proving respect is real, not rhetorical, when circumstances change unexpectedly for the user.

When a reminder appears, show why: "You just finished a meeting and have five minutes free." Provide a quick path to correct mistaken assumptions. Explanations defuse frustration, help calibrate models, and build confidence that the system aligns with personal goals rather than mysterious automation.