{"type":"post","id":"every-memory-has-two-clocks-when-the-event-ecf7f8","slug":"every-memory-has-two-clocks-when-the-event-ecf7f8","title":"Every memory has two clocks: - when the event happened - when the system learned about it A deep dive into eight temporal scenarios in consumer apps, and how to handle each one: https://t.co/hXcOUs8Nw0","description":"**Thesis:** Agent memory needs to represent event time separately from the time information entered the system.","retrieval_nugget":"**Thesis:** Agent memory needs to represent event time separately from the time information entered the system.","published_at":"2026-10-20","updated_at":"2026-10-20","record_date":"2026-10-20","date_kind":"published_at","topics":["agent-memory"],"source_urls":["https://www.nowledge.co/blog/building-memory-systems-for-ai-agents"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:every-memory-has-two-clocks-when-the-event-ecf7f8","status":"published","visuals":[],"editorial_provenance":{"schema_version":"newruntime-editorial-copy-v1","content_status":"source_grounded_final","final_copy_sha256":"sha256:4b981b17566c25079f03272e61a6562410ed1f420a8727049914ef67b96625cf","reviewed_at":"2026-10-20T17:05:58.973Z","source_evidence_count":1,"verified_claim_count":3,"site_analysis_schema_version":"newruntime-site-analysis-v1","site_object_kind":"field_note","observed_fact_count":3,"implication_count":1,"watch_condition_count":1,"related_record_count":0},"analysis":{"schema_version":"newruntime-site-analysis-v1","object_kind":"field_note","thesis":"Agent memory needs to represent event time separately from the time information entered the system.","observed_facts":[{"text":"The article distinguishes when an event happened from when the system learned about it.","source_urls":["https://www.nowledge.co/blog/building-memory-systems-for-ai-agents"]},{"text":"It describes three knowledge forms: raw conversation traces, extracted atomic Units, and Crystals cross-validated by three or more independent sources.","source_urls":["https://www.nowledge.co/blog/building-memory-systems-for-ai-agents"]},{"text":"It reports a two-tier retrieval design with a fast path for most queries and a deep path for harder queries.","source_urls":["https://www.nowledge.co/blog/building-memory-systems-for-ai-agents"]}],"mechanism":"Separating event time from learning time lets retrieval distinguish questions about when something happened from questions about when information was added; the article places this within a broader lifecycle from conversation traces to structured knowledge and cross-validated conclusions.","why_now":"As people move among AI tools, memory systems must support continuity and knowledge evolution rather than simply accumulate records.","implications":["Systems that retain only a creation timestamp risk answering event-time questions with ingestion-time data."],"evidence_boundary":"The source is an engineering account from the team behind Nowledge Mem; it does not establish independent performance, comparative quality, or adoption results.","watch_conditions":["Whether the described temporal model is shown to improve retrieval across the article’s eight scenarios in a reproducible evaluation."],"related_records":[],"new_branch_reason":"No prior New Runtime record was supplied; this record isolates temporal modeling as a distinct engineering dimension within agent memory."},"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/every-memory-has-two-clocks-when-the-event-ecf7f8/","markdown":"https://newruntime.com/posts/every-memory-has-two-clocks-when-the-event-ecf7f8.md","json":"https://newruntime.com/posts/every-memory-has-two-clocks-when-the-event-ecf7f8.json"},"related_patterns":["company-memory-needs-write-loops"],"related_shifts":["shared-context-infrastructure"],"next_reads":[{"type":"topic","path":"/topics/agent-memory/","url":"https://newruntime.com/topics/agent-memory/","title":"Agent Memory","reason":"Explore the agent-memory topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/agent-memory.md","json_url":"https://newruntime.com/topics/agent-memory.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}