Inputs and Integrity
Trustworthy decisions require trustworthy data. Normalize units, fix time zones, and document sample rates. If your sleep app rounds aggressively, treat its numbers as fuzzy and design accordingly. Fill gaps deliberately rather than guessing. A tiny checklist during setup—source, granularity, freshness, ownership—saves many headaches later. When data integrity rises, you stop arguing with numbers and start negotiating better choices with yourself.