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+---
+language:
+- en
+license: unknown
+size_categories:
+- 10K<n<100K
+configs:
+- config_name: raw
+  data_files:
+  - split: train
+    path: "data/raw/*.parquet"
+---
+
+<div style="
+  display: inline-block;
+  width: fit-content;
+  max-width: 100%;
+  background: #0b0f14;
+  border: 1px solid #223044;
+  border-left: 5px solid #20c997;
+  border-radius: 8px;
+  padding: 14px 18px;
+  margin-bottom: 20px;
+  color: #e6edf3;
+  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', monospace;
+  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.18);
+">
+  <p style="
+    margin: 0 0 6px 0;
+    color: #8aa2bd;
+    font-size: 12px;
+    line-height: 1.4;
+    text-transform: uppercase;
+  ">codex dataset card</p>
+  <p style="
+    margin: 0;
+    color: #e6edf3;
+    font-size: 15px;
+    font-weight: 650;
+    line-height: 1.45;
+  "><span style="color:#20c997;">&gt;</span> generated by <span style="color:#ffffff;">Codex</span><span style="color:#20c997;">_</span></p>
+</div>
+
+# Dataset Card for lesswrong_260509
+
+## Dataset Summary
+
+A structured crawl of public longform posts and comments from [LessWrong](https://www.lesswrong.com), a ForumMagnum-powered discussion site focused on rationality, cognitive science, AI alignment, forecasting, philosophy, and related topics. The dataset contains 45,933 posts and 906,338 comments, preserving one flat comment list per post with parent IDs, nesting depth, orphan markers, timestamps, scores, vote counts, author metadata, and post-level flags.
+
+The crawl targets public, approved, non-draft, non-future, listed, non-shortform posts visible to an anonymous LessWrong GraphQL requester.
+
+---
+
+## Dataset Details
+
+### Dataset Description
+
+- **Language(s):** English
+- **Crawl date:** 2026-05-06 to 2026-05-09
+
+### Dataset Sources
+
+- **Source Website:** https://www.lesswrong.com
+- **Source API:** https://www.lesswrong.com/graphql
+
+---
+
+## Uses
+
+### Direct Use
+
+Suitable for:
+- Academic research into forum dynamics and longform online discussion
+- Computational social science research on rationalist and AI safety communities
+- Linguistic analysis of argumentative, technical, and speculative web discourse
+- Studying thread/reply structures, voting patterns, and moderation markers
+- Information retrieval and semantic search over LessWrong posts and discussions
+
+---
+
+## Dataset Structure
+
+### Schema
+
+| Column | Type | Description |
+|--------|------|-------------|
+| `source` | struct | Crawl/source metadata for the row |
+| `post` | struct | Post metadata and body content |
+| `comments_flat_count` | int64 | Number of comments in the `comments` list |
+| `comments` | list<struct> | Flat list of comments associated with the post |
+
+#### Source Struct
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `lesswrong_graphql` | string | LessWrong GraphQL endpoint used for the crawl |
+| `lesswrong_url` | string | Direct LessWrong URL for the post |
+| `greaterwrong_url` | string | Corresponding GreaterWrong mirror URL |
+| `fetched_at` | string | ISO-8601 timestamp when the record was fetched |
+
+#### Post Struct
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `_id` | string | Unique post identifier |
+| `title` | string | Post title |
+| `slug` | string | URL slug |
+| `pageUrl` | string | Full LessWrong URL |
+| `pageUrlRelative` | string | Relative LessWrong URL path |
+| `url` | string or null | External URL for link posts |
+| `postedAt` | string | Post timestamp (ISO-8601) |
+| `baseScore` | int64 | Net score at crawl time |
+| `voteCount` | int64 | Vote count at crawl time |
+| `wordCount` | int64 | Word count reported by LessWrong |
+| `htmlBody` | string | Post body in HTML |
+| `meta` | bool | Whether the post is marked as meta |
+| `question` | bool | Whether the post is marked as a question |
+| `isEvent` | bool | Whether the post is an event post |
+| `frontpageDate` | string or null | Frontpage timestamp, if present |
+| `curatedDate` | string or null | Curated timestamp, if present |
+| `legacyId` | string or null | Legacy LessWrong identifier, if present |
+| `user` | struct | Author info (`_id`, `username`, `slug`, `displayName`) |
+
+#### Comment Struct
+
+| Field | Type | Description |
+|-------|------|-------------|
+| `_id` | string | Unique comment identifier |
+| `postId` | string | Parent post ID |
+| `parentCommentId` | string or null | ID of the parent comment this replies to |
+| `topLevelCommentId` | string or null | ID of the top-level ancestor comment |
+| `pageUrl` | string | Direct LessWrong URL for the comment |
+| `pageUrlRelative` | string | Relative LessWrong URL path |
+| `postedAt` | string | Comment timestamp (ISO-8601) |
+| `baseScore` | int64 | Net score at crawl time |
+| `voteCount` | int64 | Vote count at crawl time |
+| `wordCount` | int64 | Word count reported by LessWrong |
+| `htmlBody` | string | Comment body in HTML |
+| `deleted` | bool | Whether the comment is deleted |
+| `deletedPublic` | bool | Whether the deletion is public |
+| `retracted` | bool | Whether the comment is retracted |
+| `legacyId` | string or null | Legacy LessWrong identifier, if present |
+| `user` | struct | Author info (`_id`, `username`, `slug`, `displayName`) |
+| `position` | int64 | 1-based position in pre-order traversal within the post's comment list |
+| `depth` | int64 | Nesting depth (0 = top-level comment or orphan-root comment) |
+| `orphan` | bool | Whether the comment was associated with the post but not attached to the main comment tree |
+
+### Statistics
+
+| Metric | Value |
+|--------|-------|
+| Posts | 45,933 |
+| Non-orphan comments | 902,220 |
+| Orphan comments | 4,118 |
+| Total comments | 906,338 |
+| Post date range | 2005-01-01 to 2026-05-06 |
+| Comment date range | 2006-11-22 to 2026-05-09 |
+| Crawl timestamp range | 2026-05-06 to 2026-05-09 |
+| Mean comments per post | 19.7 |
+| Median comments per post | 4 |
+| Longest post thread | 2,001 comments |
+| Max nesting depth | 91 |
+| Post authors | 6,581 |
+| Comment authors | 22,139 |
+| Posts with no author | 1,510 (3.3%) |
+| Link posts | 5,516 (12.0%) |
+| Text posts | 40,417 (88.0%) |
+| Posts with no comments | 12,059 (26.3%) |
+| Meta posts | 213 (0.5%) |
+| Question posts | 2,689 (5.9%) |
+| Event posts | 2,095 (4.6%) |
+| Frontpage posts | 22,581 (49.2%) |
+| Curated posts | 738 (1.6%) |
+| Negative-score posts | 1,904 (4.1%) |
+| Mean post word count | 1,324 |
+| Median post word count | 577 |
+| Mean post body HTML length | 19,154 characters |
+| Median post body HTML length | 4,742 characters |
+| Mean comment word count | 106 |
+| Median comment word count | 60 |
+| Blank comment bodies | 2,336 (0.3%) |
+| Deleted comments | 1,838 (0.2%) |
+| Retracted comments | 10,239 (1.1%) |
+
+The most prolific post authors include **Eliezer Yudkowsky** (1,048 posts), **Zvi** (989), **jefftk** (921), **Stuart_Armstrong** (811), and **KatjaGrace** (632). The most prolific comment authors include **ChristianKl** (13,987 comments), **wedrifid** (13,141), **Lumifer** (11,480), **gwern** (10,952), and **Vladimir_Nesov** (8,612).
+
+---
+
+## Dataset Creation
+
+### Curation Rationale
+
+LessWrong is a long-running forum for rationality, AI alignment, decision theory, philosophy, cognitive science, and adjacent technical discussion. A structured archive makes this corpus available for research into longform online discourse, intellectual community dynamics, and the development of AI safety and rationalist discussion over time.
+
+### Source Data
+
+#### Data Collection and Processing
+
+- **Tool:** Custom Python script using the public LessWrong GraphQL API
+- **Scope:** Public, approved, non-draft, non-future, listed, non-shortform posts visible to anonymous GraphQL requests
+- **No filtering** was applied to fetched content; all crawled posts and comments are included
+- Comments are stored as a single flat list in the `comments` column
+- Parent-child relationships are preserved using `parentCommentId`, `topLevelCommentId`, `position`, and `depth`
+- Comments that could not be attached to the main comment tree are retained in `comments` with `orphan = true`
+- Score and vote counts are snapshot values from crawl time
+
+#### Who are the source data producers?
+
+LessWrong users posting under real names or pseudonymous usernames.
+
+---
+
+## Bias, Risks, and Limitations
+
+### Content Risks
+
+- Content reflects the interests, norms, and epistemic commitments of the LessWrong community
+- Posts may contain speculative, controversial, or technical claims presented with varying levels of evidence
+- Discussions may include sensitive topics such as AI existential risk, mental health, bioethics, politics, religion, self-experimentation, and personal life decisions
+- Historical posts may contain outdated claims, broken links, or references to community controversies
+
+### Structural Limitations
+
+- The crawl was conducted from 2026-05-06 to 2026-05-09 and includes no content discovered beyond that snapshot
+- The latest post in the shards is dated 2026-05-06, while the latest comment is dated 2026-05-09
+- Vote counts, scores, curation status, frontpage status, deletion markers, and retraction markers are snapshot values and may have changed since crawl time
+- The dataset is limited to content discoverable through the public GraphQL API without privileged access
+- Some older imported LessWrong content has missing author metadata or legacy formatting artifacts in `htmlBody`
+- A small number of comments are marked with `orphan = true` because they could not be attached to the main comment tree
+
+### Personal and Sensitive Information
+
+- No systematic PII detection or redaction was performed
+- Many users post under stable pseudonyms, and some post under real names
+- Posts and comments may contain references to real individuals, organizations, events, or personal experiences
+- The dataset should be treated as containing potentially sensitive information
+
+## Licence and Redistribution
+
+No licence was identified for the source forum content. This dataset is therefore marked as `license: unknown`.
+
+The dataset consists of scraped public forum posts authored by third parties. The dataset publisher does not claim ownership of the underlying post text and does not grant additional rights beyond any rights users may already have under applicable law.
+
+Users are responsible for determining whether their intended use is lawful, including with respect to copyright, privacy, data protection, and platform terms.