--- title: "Topic: Perception" description: "Generated static Jiang Lens topic dossier for Perception." topic_slug: "perception" generated: "true" --- # Topic: Perception Generated static topic dossier for agents. Use this topic page as a routing and synthesis surface, not as primary evidence for Jiang-spoken claims. Final answers should cite the source reading, transcript segment, source ref, and video timestamp linked below. Human topic page: [/topics/perception/](https://jianglens.com/topics/perception/) Text mirror: [/topics/perception.txt](https://jianglens.com/topics/perception.txt) Markdown mirror: [/topics/perception.md](https://jianglens.com/topics/perception.md) Citation rule: do not cite this .txt/.md mirror in final answers. Do not cite the topic page as primary evidence for what Jiang said. Cite human-readable source readings for generated summaries and lens context; cite transcript and video timestamp links below for Jiang-spoken quotations. Aliases: `perceptions` ## What This Topic Covers This generated topic groups Jiang Lens evidence about **Perception** across transcript matches, source readings, semantic tags, and source refs. Current focus: Because Ugolino has organized his world through betrayal, he cannot recognize love when his sons show it and instead consumes them. Most connected source readings: **Hell Is the Imagination Turned Against Itself**; **The Parasite Feeds on Reality**; **The Poem That Gives Birth To Civilization**. Nearby topic cluster: Treachery, Love, Ugolino, American Empire, Invincibility. ## Extracted Topic Notes - model: Because Ugolino has organized his world through betrayal, he cannot recognize love when his sons show it and instead consumes them. Source refs: `video:predictive-history-wgpdmya2bme@transcript:v1#seg-0028`, `video:predictive-history-wgpdmya2bme@transcript:v1#seg-0029` - diagnosis: The first major system problem is that everything depends on belief in an invincible American Empire; once people see alternatives or weakness, the edifice can collapse. Source refs: `video:predictive-history-aqsdsqdlfxk@transcript:v1#seg-0024` - definition: Metaphors are connections that clarify reality by showing relationships the listener could not see before. Source refs: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0010` - model: A surprising metaphor becomes memorable, and because it is remembered it can reorder the way reality is seen. Source refs: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0010` - diagnosis: Jiang presents Kant as primarily concerned with how humans understand reality, why they see what they see, and why they think the thoughts they have. Source refs: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0011` - model: Jiang reads Kant as rejecting passive observation: humans are active participants who shape and form the reality before them. Source refs: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0012` - model: Jiang glosses objective reality as vibrations, sound, frequencies, or pure energy that humans cannot perceive directly without mental filters. Source refs: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0012`, `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0013` - model: Time and space are internal filters for understanding reality rather than things that exist outside us. Source refs: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0013` ## Quoted Transcript Hits 1. **Hell Is the Imagination Turned Against Itself** / Great Books #10: Dante's Hierarchy of Hell -- 2026-04-29, day precision Timestamp: [27:57](https://www.youtube.com/watch?v=wGpdMYa2bME&t=1677s) | Transcript: [seg-0028](https://jianglens.com/episodes/predictive-history-wgpdmya2bme/transcript/#seg-0028) Source ref: `video:predictive-history-wgpdmya2bme@transcript:v1#seg-0028` Quote: "Okay, alright, so, um, the count, he's hungry, he knows he's at fault for condemning his entire family to death. But he cannot bring..." Human reading: [/episodes/predictive-history-wgpdmya2bme/](https://jianglens.com/episodes/predictive-history-wgpdmya2bme/) | Text mirror: [/episodes/predictive-history-wgpdmya2bme.txt](https://jianglens.com/episodes/predictive-history-wgpdmya2bme.txt) | JSON: [/data/lens/episodes/predictive-history-wgpdmya2bme.json](https://jianglens.com/data/lens/episodes/predictive-history-wgpdmya2bme.json) 2. **Hell Is the Imagination Turned Against Itself** / Great Books #10: Dante's Hierarchy of Hell -- 2026-04-29, day precision Timestamp: [28:56](https://www.youtube.com/watch?v=wGpdMYa2bME&t=1736s) | Transcript: [seg-0029](https://jianglens.com/episodes/predictive-history-wgpdmya2bme/transcript/#seg-0029) Source ref: `video:predictive-history-wgpdmya2bme@transcript:v1#seg-0029` Quote: "And so that's what, that's why treachery is so devastating. Because it blinds you. It blinds you to the possibility of love. Okay? It..." Human reading: [/episodes/predictive-history-wgpdmya2bme/](https://jianglens.com/episodes/predictive-history-wgpdmya2bme/) | Text mirror: [/episodes/predictive-history-wgpdmya2bme.txt](https://jianglens.com/episodes/predictive-history-wgpdmya2bme.txt) | JSON: [/data/lens/episodes/predictive-history-wgpdmya2bme.json](https://jianglens.com/data/lens/episodes/predictive-history-wgpdmya2bme.json) 3. **The Parasite Feeds on Reality** / Game Theory #13: Epstein's World -- 2026-03-17, day precision Timestamp: [24:36](https://www.youtube.com/watch?v=aQSDSqdlFxk&t=1476s) | Transcript: [seg-0024](https://jianglens.com/episodes/predictive-history-aqsdsqdlfxk/transcript/#seg-0024) Source ref: `video:predictive-history-aqsdsqdlfxk@transcript:v1#seg-0024` Quote: "...first major problem is all this is based on empire the perception of empire and what this means is that everyone has to believe..." Human reading: [/episodes/predictive-history-aqsdsqdlfxk/](https://jianglens.com/episodes/predictive-history-aqsdsqdlfxk/) | Text mirror: [/episodes/predictive-history-aqsdsqdlfxk.txt](https://jianglens.com/episodes/predictive-history-aqsdsqdlfxk.txt) | JSON: [/data/lens/episodes/predictive-history-aqsdsqdlfxk.json](https://jianglens.com/data/lens/episodes/predictive-history-aqsdsqdlfxk.json) 4. **The Poem That Gives Birth To Civilization** / Great Books #3: Poets and Prophets -- 2026-01-21, day precision Timestamp: [10:42](https://www.youtube.com/watch?v=XRP407WsA0w&t=642s) | Transcript: [seg-0010](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/transcript/#seg-0010) Source ref: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0010` Quote: "Drawing pictures for you to see. Okay? Metaphors. Connections. Okay? Metaphors is what we call connections. And connections are things. They're things that help..." Human reading: [/episodes/predictive-history-xrp407wsa0w/](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/) | Text mirror: [/episodes/predictive-history-xrp407wsa0w.txt](https://jianglens.com/episodes/predictive-history-xrp407wsa0w.txt) | JSON: [/data/lens/episodes/predictive-history-xrp407wsa0w.json](https://jianglens.com/data/lens/episodes/predictive-history-xrp407wsa0w.json) 5. **The Poem That Gives Birth To Civilization** / Great Books #3: Poets and Prophets -- 2026-01-21, day precision Timestamp: [11:55](https://www.youtube.com/watch?v=XRP407WsA0w&t=715s) | Transcript: [seg-0011](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/transcript/#seg-0011) Source ref: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0011` Quote: "Because when you memorize the Iliad, you learn how to make a great speech. All right? And you understood that for me to make..." Human reading: [/episodes/predictive-history-xrp407wsa0w/](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/) | Text mirror: [/episodes/predictive-history-xrp407wsa0w.txt](https://jianglens.com/episodes/predictive-history-xrp407wsa0w.txt) | JSON: [/data/lens/episodes/predictive-history-xrp407wsa0w.json](https://jianglens.com/data/lens/episodes/predictive-history-xrp407wsa0w.json) 6. **The Poem That Gives Birth To Civilization** / Great Books #3: Poets and Prophets -- 2026-01-21, day precision Timestamp: [13:13](https://www.youtube.com/watch?v=XRP407WsA0w&t=793s) | Transcript: [seg-0012](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/transcript/#seg-0012) Source ref: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0012` Quote: "Okay? So what he tells us is this. Traditionally, we've understood ourselves as passive observers of reality. Okay? This thing is before us. We..." Human reading: [/episodes/predictive-history-xrp407wsa0w/](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/) | Text mirror: [/episodes/predictive-history-xrp407wsa0w.txt](https://jianglens.com/episodes/predictive-history-xrp407wsa0w.txt) | JSON: [/data/lens/episodes/predictive-history-xrp407wsa0w.json](https://jianglens.com/data/lens/episodes/predictive-history-xrp407wsa0w.json) Related lens: [How Poetry Creates Civilization](https://jianglens.com/lens/how-poetry-creates-civilization/) 7. **The Poem That Gives Birth To Civilization** / Great Books #3: Poets and Prophets -- 2026-01-21, day precision Timestamp: [14:37](https://www.youtube.com/watch?v=XRP407WsA0w&t=877s) | Transcript: [seg-0013](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/transcript/#seg-0013) Source ref: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0013` Quote: "And we do so through a filter called time and space. So time and space do not exist outside of us. They exist inside..." Human reading: [/episodes/predictive-history-xrp407wsa0w/](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/) | Text mirror: [/episodes/predictive-history-xrp407wsa0w.txt](https://jianglens.com/episodes/predictive-history-xrp407wsa0w.txt) | JSON: [/data/lens/episodes/predictive-history-xrp407wsa0w.json](https://jianglens.com/data/lens/episodes/predictive-history-xrp407wsa0w.json) Related lens: [How Stories Control Reality](https://jianglens.com/lens/how-stories-control-reality/#stories-language-builds-common-reality); [How Poetry Creates Civilization](https://jianglens.com/lens/how-poetry-creates-civilization/) 8. **The Poem That Gives Birth To Civilization** / Great Books #3: Poets and Prophets -- 2026-01-21, day precision Timestamp: [37:03](https://www.youtube.com/watch?v=XRP407WsA0w&t=2223s) | Transcript: [seg-0031](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/transcript/#seg-0031) Source ref: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0031` Quote: "Poetry lets us see the divine everywhere, okay? We're not able to see this because of how our minds work, because we're only able..." Human reading: [/episodes/predictive-history-xrp407wsa0w/](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/) | Text mirror: [/episodes/predictive-history-xrp407wsa0w.txt](https://jianglens.com/episodes/predictive-history-xrp407wsa0w.txt) | JSON: [/data/lens/episodes/predictive-history-xrp407wsa0w.json](https://jianglens.com/data/lens/episodes/predictive-history-xrp407wsa0w.json) 9. **The Poem That Gives Birth To Civilization** / Great Books #3: Poets and Prophets -- 2026-01-21, day precision Timestamp: [39:12](https://www.youtube.com/watch?v=XRP407WsA0w&t=2352s) | Transcript: [seg-0033](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/transcript/#seg-0033) Source ref: `video:predictive-history-xrp407wsa0w@transcript:v1#seg-0033` Quote: "It compels us to feel that which we perceive and to imagine that which we know. It creates a new universe after it has..." Human reading: [/episodes/predictive-history-xrp407wsa0w/](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/) | Text mirror: [/episodes/predictive-history-xrp407wsa0w.txt](https://jianglens.com/episodes/predictive-history-xrp407wsa0w.txt) | JSON: [/data/lens/episodes/predictive-history-xrp407wsa0w.json](https://jianglens.com/data/lens/episodes/predictive-history-xrp407wsa0w.json) Related lens: [How Poetry Creates Civilization](https://jianglens.com/lens/how-poetry-creates-civilization/) 10. **The Great Books and the Escape From the Dead Zombie World** / Great Books #1: Secrets of the Universe -- 2026-01-07, day precision Timestamp: [4:29](https://www.youtube.com/watch?v=TsD-8FGA84A&t=269s) | Transcript: [seg-0006](https://jianglens.com/episodes/predictive-history-tsd-8fga84a/transcript/#seg-0006) Source ref: `video:predictive-history-tsd-8fga84a@transcript:v1#seg-0006` Quote: "So our brains are constructed in a way that allows us to perceive the spiritual and turn it into the material. So another man..." Human reading: [/episodes/predictive-history-tsd-8fga84a/](https://jianglens.com/episodes/predictive-history-tsd-8fga84a/) | Text mirror: [/episodes/predictive-history-tsd-8fga84a.txt](https://jianglens.com/episodes/predictive-history-tsd-8fga84a.txt) | JSON: [/data/lens/episodes/predictive-history-tsd-8fga84a.json](https://jianglens.com/data/lens/episodes/predictive-history-tsd-8fga84a.json) Related lens: [The Dead World And The Cave](https://jianglens.com/lens/the-dead-world-and-the-cave/) 11. **The Great Books and the Escape From the Dead Zombie World** / Great Books #1: Secrets of the Universe -- 2026-01-07, day precision Timestamp: [20:48](https://www.youtube.com/watch?v=TsD-8FGA84A&t=1248s) | Transcript: [seg-0025](https://jianglens.com/episodes/predictive-history-tsd-8fga84a/transcript/#seg-0025) Source ref: `video:predictive-history-tsd-8fga84a@transcript:v1#seg-0025` Quote: "Okay? When you see the phenomena, you're like, oh my God, it's just energy. Okay? It's just colors, colors, colors. So if you go..." Human reading: [/episodes/predictive-history-tsd-8fga84a/](https://jianglens.com/episodes/predictive-history-tsd-8fga84a/) | Text mirror: [/episodes/predictive-history-tsd-8fga84a.txt](https://jianglens.com/episodes/predictive-history-tsd-8fga84a.txt) | JSON: [/data/lens/episodes/predictive-history-tsd-8fga84a.json](https://jianglens.com/data/lens/episodes/predictive-history-tsd-8fga84a.json) Related lens: [The Dead World And The Cave](https://jianglens.com/lens/the-dead-world-and-the-cave/) 12. **Jesus Is the Spark Rome Had to Kill** / Secret History #22: The Divine Spark of Jesus -- 2025-11-27, day precision Timestamp: [1:32:09](https://www.youtube.com/watch?v=pp0E1gb80WQ&t=5529s) | Transcript: [seg-0145](https://jianglens.com/episodes/predictive-history-pp0e1gb80wq/transcript/#seg-0145) Source ref: `video:predictive-history-pp0e1gb80wq@transcript:v1#seg-0145` Quote: "The eye is the lamp of the body. If your eyes are healthy, your whole body will be full of light. But if your..." Human reading: [/episodes/predictive-history-pp0e1gb80wq/](https://jianglens.com/episodes/predictive-history-pp0e1gb80wq/) | Text mirror: [/episodes/predictive-history-pp0e1gb80wq.txt](https://jianglens.com/episodes/predictive-history-pp0e1gb80wq.txt) | JSON: [/data/lens/episodes/predictive-history-pp0e1gb80wq.json](https://jianglens.com/data/lens/episodes/predictive-history-pp0e1gb80wq.json) ## Source Readings - [Hell Is the Imagination Turned Against Itself](https://jianglens.com/episodes/predictive-history-wgpdmya2bme/) (claims) -- 2026-04-29, day precision Source: [Great Books #10: Dante's Hierarchy of Hell](https://www.youtube.com/watch?v=wGpdMYa2bME) Transcript page: [/episodes/predictive-history-wgpdmya2bme/transcript/](https://jianglens.com/episodes/predictive-history-wgpdmya2bme/transcript/) | Transcript text: [/episodes/predictive-history-wgpdmya2bme/transcript.txt](https://jianglens.com/episodes/predictive-history-wgpdmya2bme/transcript.txt) | JSON: [/data/lens/episodes/predictive-history-wgpdmya2bme.json](https://jianglens.com/data/lens/episodes/predictive-history-wgpdmya2bme.json) Summary: Dante's hell is not only a place of punishment. - [The Parasite Feeds on Reality](https://jianglens.com/episodes/predictive-history-aqsdsqdlfxk/) (claims) -- 2026-03-17, day precision Source: [Game Theory #13: Epstein's World](https://www.youtube.com/watch?v=aQSDSqdlFxk) Transcript page: [/episodes/predictive-history-aqsdsqdlfxk/transcript/](https://jianglens.com/episodes/predictive-history-aqsdsqdlfxk/transcript/) | Transcript text: [/episodes/predictive-history-aqsdsqdlfxk/transcript.txt](https://jianglens.com/episodes/predictive-history-aqsdsqdlfxk/transcript.txt) | JSON: [/data/lens/episodes/predictive-history-aqsdsqdlfxk.json](https://jianglens.com/data/lens/episodes/predictive-history-aqsdsqdlfxk.json) Summary: Jiang turns the Epstein files into a theory of war: social reality is a cave, the dollar is a consciousness trap, empire survives by looking invincible, and the exposed parasite network is already fighting... - [The Poem That Gives Birth To Civilization](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/) (claims) -- 2026-01-21, day precision Source: [Great Books #3: Poets and Prophets](https://www.youtube.com/watch?v=XRP407WsA0w) Transcript page: [/episodes/predictive-history-xrp407wsa0w/transcript/](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/transcript/) | Transcript text: [/episodes/predictive-history-xrp407wsa0w/transcript.txt](https://jianglens.com/episodes/predictive-history-xrp407wsa0w/transcript.txt) | JSON: [/data/lens/episodes/predictive-history-xrp407wsa0w.json](https://jianglens.com/data/lens/episodes/predictive-history-xrp407wsa0w.json) Summary: A source-grounded reading of Homer as civilizational engine: the Iliad trains Greeks to fight with speeches, poetry projects movies onto the world, language controls time and space, and the poet becomes the flame through... - [The Great Books and the Escape From the Dead Zombie World](https://jianglens.com/episodes/predictive-history-tsd-8fga84a/) (claims) -- 2026-01-07, day precision Source: [Great Books #1: Secrets of the Universe](https://www.youtube.com/watch?v=TsD-8FGA84A) Transcript page: [/episodes/predictive-history-tsd-8fga84a/transcript/](https://jianglens.com/episodes/predictive-history-tsd-8fga84a/transcript/) | Transcript text: [/episodes/predictive-history-tsd-8fga84a/transcript.txt](https://jianglens.com/episodes/predictive-history-tsd-8fga84a/transcript.txt) | JSON: [/data/lens/episodes/predictive-history-tsd-8fga84a.json](https://jianglens.com/data/lens/episodes/predictive-history-tsd-8fga84a.json) Summary: A source-grounded reading of the Great Books as initiation: school materialism is named as the great lie, consciousness becomes the real substance of the universe, attention is true wealth, and reading becomes a way... - [Jesus Is the Spark Rome Had to Kill](https://jianglens.com/episodes/predictive-history-pp0e1gb80wq/) (claims) -- 2025-11-27, day precision Source: [Secret History #22: The Divine Spark of Jesus](https://www.youtube.com/watch?v=pp0E1gb80WQ) Transcript page: [/episodes/predictive-history-pp0e1gb80wq/transcript/](https://jianglens.com/episodes/predictive-history-pp0e1gb80wq/transcript/) | Transcript text: [/episodes/predictive-history-pp0e1gb80wq/transcript.txt](https://jianglens.com/episodes/predictive-history-pp0e1gb80wq/transcript.txt) | JSON: [/data/lens/episodes/predictive-history-pp0e1gb80wq.json](https://jianglens.com/data/lens/episodes/predictive-history-pp0e1gb80wq.json) Summary: A source-grounded reading of Jiang's Jesus lecture: Christianity begins as a pile of impossible doctrines, the historical Jesus is thinner and stranger, the Gospel of Thomas makes him a poet-prophet of the divine spark,... - [Heaven on Earth Is Built by Common Sacrifice](https://jianglens.com/episodes/predictive-history-vtnra-gnkm8/) (claims) -- 2025-10-24, day precision Source: [Secret History #12: Heaven on Earth](https://www.youtube.com/watch?v=VtnRA-GNKM8) Transcript page: [/episodes/predictive-history-vtnra-gnkm8/transcript/](https://jianglens.com/episodes/predictive-history-vtnra-gnkm8/transcript/) | Transcript text: [/episodes/predictive-history-vtnra-gnkm8/transcript.txt](https://jianglens.com/episodes/predictive-history-vtnra-gnkm8/transcript.txt) | JSON: [/data/lens/episodes/predictive-history-vtnra-gnkm8.json](https://jianglens.com/data/lens/episodes/predictive-history-vtnra-gnkm8.json) Summary: A source-grounded reading of Jiang's lecture on temples, pyramids, farming, ritual ecology, and the modern inability to build wonders: people once organized around heaven on earth; now the religion is capitalism. - [Imagination Came Before Civilization](https://jianglens.com/episodes/predictive-history-lvhsg5qtds8/) (claims) -- 2025-10-21, day precision Source: [Secret History #11: Dawn of the Human Imagination](https://www.youtube.com/watch?v=LvHsg5qtDs8) Transcript page: [/episodes/predictive-history-lvhsg5qtds8/transcript/](https://jianglens.com/episodes/predictive-history-lvhsg5qtds8/transcript/) | Transcript text: [/episodes/predictive-history-lvhsg5qtds8/transcript.txt](https://jianglens.com/episodes/predictive-history-lvhsg5qtds8/transcript.txt) | JSON: [/data/lens/episodes/predictive-history-lvhsg5qtds8.json](https://jianglens.com/data/lens/episodes/predictive-history-lvhsg5qtds8.json) Summary: A source-grounded reading of Jiang's dawn-of-humanity lecture: Darwinism becomes a rival theology, cave art becomes a portal, speech begins as song, and modern society is accused of socializing people out of empathy. - [The Theory of Everything Is a War of Perception](https://jianglens.com/episodes/predictive-history-9murgjjg4aa/) (claims) -- 2025-10-15, day precision Source: [Secret History #9: The Theory of Everything](https://www.youtube.com/watch?v=9MURGjjG4aA) Transcript page: [/episodes/predictive-history-9murgjjg4aa/transcript/](https://jianglens.com/episodes/predictive-history-9murgjjg4aa/transcript/) | Transcript text: [/episodes/predictive-history-9murgjjg4aa/transcript.txt](https://jianglens.com/episodes/predictive-history-9murgjjg4aa/transcript.txt) | JSON: [/data/lens/episodes/predictive-history-9murgjjg4aa.json](https://jianglens.com/data/lens/episodes/predictive-history-9murgjjg4aa.json) Summary: A source-grounded reading of Jiang's attack on the scientific worldview: Big Bang, evolution, neuroscience, school, and transhumanism become parts of one material story that forgets divinity, fears death, and lets power reinvent reality. ## Related Topics - [Treachery](https://jianglens.com/topics/treachery/) - [Love](https://jianglens.com/topics/love/) - [Ugolino](https://jianglens.com/topics/ugolino/) - [American Empire](https://jianglens.com/topics/american-empire/) - [Invincibility](https://jianglens.com/topics/invincibility/) - [Metaphor](https://jianglens.com/topics/metaphor/) - [Connections](https://jianglens.com/topics/connections/) - [Poetry](https://jianglens.com/topics/poetry/) - [Surprise](https://jianglens.com/topics/surprise/) - [Memory](https://jianglens.com/topics/memory/) - [Kant](https://jianglens.com/topics/kant/) - [Reality](https://jianglens.com/topics/reality/) ## Retrieval Notes This file is generated from Jiang Lens episode JSON, semantic tags, glossary terms, source refs, and transcript segment matches. It is not a manually authored canon page. For broader or missing-topic search, use the letter shards under /topics/index/ before falling back to the bulk transcript-search files.