Topic projection · encyclopedia
Executable constitutional governance without routine discretionary human decisions or self-authorization.
51public objects4 object kinds
Experimental lens manifest. These routes currently preserve the same included-object inventory. Their labels and manifest identities differ; they are not yet materially different editorial products. This remains a manifest, not a differentiated editorial result.
evidence-first skeptical frontier historical pedagogical source-only
Public catalog
Grouped by object kind. Catalog links are navigation, not evidence of similarity or support.
1 object
constitution
Accepted constitution in the public catalog.
Open objectMarkdown twinAccepted source
constitutionconstitution/constitution.jsonapplication/jsonem:constitution:sha256:613e02f2c47e627e986485e33793f27cbc1da022f05c71e18d7b874664e0ae73e6f0136751cf059d417f6f4c188340a6b1d110eea99188d3c87ebf97275815b648 objects
documentation
Machine-readable authority lives in the constitution, policies, schemas, task contracts, accepted event history, and release manifests. Documentation explains those objects but does not silently override them.
Open objectMarkdown twinAccepted source
documentationdocs/README.mdtext/markdownem:documentation:sha256:c0c5ca378529fd455971b7dd323f54c3961dbc6c54472f6bf0d796560bed3d8620aa3079db17696dfd1ffabc96ed3f4f278e3d25c5ebf0d0e0d3494add80a4b4documentation
This directory contains repeatable operating recipes. AGENTS.md remains the root authority contract.
Open objectMarkdown twinAccepted source
documentationdocs/agent-ops/README.mdtext/markdownem:documentation:sha256:c33dcbb04b7907672ac2aeb8b070ccdcaa3759dfd5e9feb6bbedd4c848d33ba657865da7b5d622610d327ddf0ade713e5cd18b29c5bc88e0d34acbfb5b1cc778documentation
Orient: make orient. 2. Select: python -m epistemedia repo next. 3. Read the root contract, selected task contract, execution plan, scoped authority, schemas, policies, and tests. 4. Claim through an append-only proposal. 5. Work in one…
Open objectMarkdown twinAccepted source
documentationdocs/agent-ops/contributor.mdtext/markdownem:documentation:sha256:477c27b7a79e2bd2eadee636d8576be10f0be62fcf9d3e7129de210f820501a6200449654805e3a1a6e1757550e7355b71486f32f5a8bdce5239f0c7293ba4bbdocumentation
The GitHub pilot treats the submitted proposal, source text, links, Markdown, and branch contents as untrusted coordination input.
Open objectMarkdown twinAccepted source
documentationdocs/agent-ops/open-docket-threat-model.mdtext/markdownem:documentation:sha256:75f17f9c966ca834123279a4bba0240a0f1f234418f49584bdd122be810d1dba45bdb02f7f0576dcd4b9011349500d5c3006a15f2b230bb57fbbbf375ffdc30edocumentation
Epistemedia separates five actions that a single “submit research” button would otherwise blur:
Open objectMarkdown twinAccepted source
documentationdocs/agent-research.mdtext/markdownem:documentation:sha256:48af007736b114602059ebeb23571eb06b9779a4547f7f5be589dc17adc963aa0de6a6ae4aaa3e99162a200d00c587f8225edfc5a30816cfea8ae9f6500be6d0documentation
All integrations read the same disclosure-safe public catalog. Preserve the returned catalog_id, frontier, commit, compiler, policy IDs, object IDs, and content digests when storing or citing results.
Open objectMarkdown twinAccepted source
documentationdocs/api-mcp-cli.mdtext/markdownem:documentation:sha256:072af76b27865c61d26842f1e426b5369ed8e83212b690c7d05fb2558c07a14bc831e99e3c61f439d66d28d8560010631fd148db3eec1c1afc1abe30a86461a9documentation
The API and MCP gateway is a read-only projection service. It receives an accepted repository snapshot and exposes no GitHub, contribution, deployment, package-publishing, signing, or arbitrary network-fetch authority.
Open objectMarkdown twinAccepted source
documentationdocs/api-mcp-deployment.mdtext/markdownem:documentation:sha256:30fe42f129cc7f12b02b2c5aa17d1c05b8fd2a7a8deebf5208ab79c70c0bcfb48f96dba2e401d83cd5f25c28b0dc7d8ce3413ce4a702b8a2192b3c1824ec4d08documentation
Epistemedia is not an autonomous wiki whose canonical object is a page. Its canonical substrate is an append-only, provenance-preserving epistemic history. Pages and agent responses are reproducible projections over that history.
Open objectMarkdown twinAccepted source
documentationdocs/architecture.mdtext/markdownem:documentation:sha256:e692c6fd478d9d233f49d97573d028c76cf490d5cd6dc722c8827b1072128ae1e98789193cda4246aeb9738f82adafc21424d45cbdf51678c00e7681b821437fdocumentation
Knowledge that can show its work.
Open objectMarkdown twinAccepted source
documentationdocs/brand.mdtext/markdownem:documentation:sha256:41cf4e33a19c62d8f32cf4c763f4d9299261a1a6bedcd4d28d15e664636d6764b27c9de7ba02d52bdca9f0aae5b20ebaec307e265bc6a7664821448ae45412d7documentation
Epistemedia's contribution CI is defined in .github/workflows/ci.yml and appears in GitHub Actions as Validate.
Open objectMarkdown twinAccepted source
documentationdocs/ci-verification.mdtext/markdownem:documentation:sha256:7d40369d2fffe5da6c71035371c870fb74f1a75e7710b6f9bab3b97d4c1dbfd532d80c474aaf57128d7c2450080f8eb562f3e8786c8211edeff1f864734c6be0documentation
Status: implemented public shell and two reviewed dossier interactions.
Open objectMarkdown twinAccepted source
documentationdocs/design-system.mdtext/markdownem:documentation:sha256:1a5c78c66bce57f349b87a0ee3a5c8fad27c9a7727f8c21c3a639caea1fb3beabaf1f9521836a54e56a01a955d1ee602dac2e52ae3040f3e5f06acab17dbb189documentation
Status: reversible alpha application contracts exercised by four reviewed vertical slices.
Open objectMarkdown twinAccepted source
documentationdocs/dossiers.mdtext/markdownem:documentation:sha256:8dfc3b2016e9345c0e8b8d4533b916c53f1c0fca174be79a551dbc6cddf9462a18a4f49fdaddd09f48e78aaf961bf9dc1847ef2a836475b4d3f50f9ed232b5d5documentation
Status: owner-directed conceptual orientation, preserved under EM-0025.
Open objectMarkdown twinAccepted source
documentationdocs/editorial/epistemic-vocabulary.mdtext/markdownem:documentation:sha256:d1307dea5513e6ae679d3b27d52aa7ea4845ec3a77d461160148d4e4a4d5665ce7ac54a9808d5877dcf383c19a55bac5242d8b821733a069f49d7aeb13544413documentation
Status: active editorial queue. Originally accepted under EM-0025 and updated under EM-0031 after Cases 001 and 002 became independently reviewed live dossiers.
Open objectMarkdown twinAccepted source
documentationdocs/editorial/how-we-know-case-roadmap.mdtext/markdownem:documentation:sha256:991bca6f4e19f50ded1b0d782fe7b3fbc5e036e295b80dc07dabef0457df443dc20de70e8a3b417a203284dd48ecff3015fdf3149ed09e73e5888657b1f86becdocumentation
Status: candidate validation complete; awaiting exact-head independent review on codex/em-0021-feature-backfire-case.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0021.mdtext/markdownem:documentation:sha256:c9c7451d1b3ec0efe452ddbf264b384327f76111c305b3c7d227ad080cf05f35252aabd54aa1bc751eb538cc44a1907270757ec620ba1bc7ed48e25b7d6ec3ebdocumentation
Status: candidate validation complete; awaiting exact-head independent review on codex/em-0022-case-entry-trust-agent-parity.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0022.mdtext/markdownem:documentation:sha256:f71a6829a4af6a24aff634b16850257f941926e6477b1f626d53f098ff1771a4693afcfc31eb4a78417957659812e0936b8e2e0ea7b87ed84e5b5efb2f27d25edocumentation
Status: candidate complete on codex/em-0023-living-evidence-report; exact-head independent review pending.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0023.mdtext/markdownem:documentation:sha256:038b4f8106811df85bb9c74a5153006eaadbf0d78f5d83ac46b3510b5bf4dd34b9546743fba0579126045dec1f2ef53741a1c72bf6c7b22649b0ae6d2a62f5c7documentation
Status: candidate complete on codex/em-0024-editorial-comprehension; exact-head review pending.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0024.mdtext/markdownem:documentation:sha256:049909b59189c00a49550cccd62b722c466af9ae48b63b7d5242df8ec9bf86ebf7ab86bb06b9f3a49dc98c8dae7ffbb5d19ec6fd530514fe2d65485b8e42229fdocumentation
Status: candidate complete on codex/em-0025-concept-and-case-roadmap; exact-head review pending.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0025.mdtext/markdownem:documentation:sha256:9e27b4f18e96e0c1f5357f51799795bf0a0af0230a148c7ee2e78dd10f66319bac95c86a9ac25036f8cbe7171f73f8e3ca9e09f999bbc5f12f72dc819239f767documentation
Status: v1 preflight failed and retained; v2 trace matrix and author-side source review complete; exact-head independent review pending.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0026.mdtext/markdownem:documentation:sha256:7aea72cd3d35a81d11f9eecb750871c4f22f63a19f5679fabf2e83e95ae1229b25600ed83d97c08b17375c5e67ab4c313bd25e4678d0e484db5b2f009e3851fddocumentation
Status: complete. Three independent source-readiness packets were exact-head reviewed and admitted through protected PR #50 at merge commit cbb029bd336404e5bc654e939308247317eaa153.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0027.mdtext/markdownem:documentation:sha256:9f0ea5058322fefe7181cb3bf2d553f0627c08d8538ea7dc86fcd9cc0a3fd82cc393d734d99dcb4ded23e5b3b0174feef1fa20ffdac6c9d36516ca8c0a170210documentation
Status: completed. PR #48 passed exact-head independent review, merged through the protected squash path, and its accepted main commit passed canonical-domain deployment and public read-back.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0028.mdtext/markdownem:documentation:sha256:b7c00a2b53e232bc636f07a22e71483a289b8771c2c7063ceb25a55a1ba327a29310ca0c8600aa31d717232187870f9a92b524e1ed2c6cfc86e24e40694025ccdocumentation
Status: first-review correction validated; exact-head successor review pending. The dossier is research-only and is not admitted, published, or deployed.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0029.mdtext/markdownem:documentation:sha256:fcdd9d6eafc2e408656424dceb994a2a35719cc4ebb7f8512bfdd5f4eec2295260fc7875b85dad4ab1c85bfd78290ffacf165eca2c2edf18d0bdceb54b7f91f9documentation
Status: complete. Independently reviewed, admitted through protected PR #53, deployed once to the verified custom domain, and read back from the live provider at accepted commit af081caa99fc08d3fabb914ff68f2e672a83bd5b.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0030.mdtext/markdownem:documentation:sha256:45bb02757ceba9bc76a69fed52a5407813513992f28b6f10ba3bd99d08d1d59cba774f7f14298e1874bae5b50fdebdeff0f21ac0e4f49b82b08cf32f7bdb89b3documentation
Status: author implementation complete on accepted base cc24a2438d390bdde40640beafb24611b7737d98; pending fresh-clone independent review.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0031.mdtext/markdownem:documentation:sha256:60b16789293c24568013e544064df09381199e6809842c914bea06028388ba178a6c0f2b55e0c32c42b51dfba9c67efc2e994342a5f3fcd169533a24f8ae28d8documentation
Status: corrected author research packet complete; fresh-clone independent re-review pending.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0032.mdtext/markdownem:documentation:sha256:ec99cae1094f32fba778603f71bca901250abcb449d44f36e4df37924fc0dc21a6bec26852132999b798197feb58de17dfae3a5ae585ed9b5234740b5eebfb5fdocumentation
Status: author research packet complete; fresh-clone independent review pending.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0033.mdtext/markdownem:documentation:sha256:2d3d044e31f14040d00ae6314d350c46cc9619cb223a4f6de91afa8f2db835dcb1230d3c41c9b432e85f1c726be44596ff90e48f2b42858e8fa8430819b3a431documentation
Status: author candidate complete; fresh-clone independent dossier review pending.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0034.mdtext/markdownem:documentation:sha256:26c919904444d2a8ed99601570955a716100a7408a93ba572e8ba718cd13430539304682b51110b673d794b6b0c012e351933c1c15226f7fd9d31b54530f30b4documentation
Status: author candidate complete; fresh-clone independent dossier review pending.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0035.mdtext/markdownem:documentation:sha256:58729c6f4b10ea09d34b7ea72672e580ba4815cf0ba7e090d0f3ef40b7fa7d32a40ac91113c51de5e387df45ba5a8848aa5dde870605028ae25b8943746804bedocumentation
Admit the exact independently reviewed Case 003 and Case 004 dossiers into the public application library without changing accepted research bytes or forcing either case into an older case's count grammar.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0036.mdtext/markdownem:documentation:sha256:98f11be079ee8b5b5e4434bd8b4223909919a17afe4dd44478d09a1e001d2f8d0294d6f86c04a17f9a17e46438c7326a6cce0d5437ac0772cefbe33ded73bda5documentation
Polish the human projection of Cases 002–004 without changing accepted evidence meaning, and make the same bounded research method recoverable by a cold-start coding agent through static files, local REST, read-only MCP, and CLI.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0037.mdtext/markdownem:documentation:sha256:ed8994f47f1274d52821fffac9e350fa2ffb5b6763defac24429b34922c55308c7232509e7c45e274e59189db2d7eb12a5298c6d5751ffdaa8b63307ef796de9documentation
Publish the owner-approved mission as a versioned, inspectable project statement and use it to make the four-case library explain why Epistemedia matters without changing any accepted evidence meaning.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0039.mdtext/markdownem:documentation:sha256:c9617f8c7a4767c78e6e23a13c69134a766a80a733f46445858879a0025097cb0fdbd063db1cf844fe053addb4bedd4d62e6f9044c2708b5ee7ffd3e0b6b0b22documentation
Test the strongest contribution claim: an unfamiliar Claude coding agent receives one public URL, chooses a contestable claim, performs bounded research, validates its packet, and opens a draft submission without private instructions. A…
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0040.mdtext/markdownem:documentation:sha256:271d2f2eeeb6b513dce6865e09cdf5c9b209d9a7314b1522af6a4439e9d67c7ba5f03190d5fc2eca7e47d2d3eed899590de2f38aee678380a82ee95263941034documentation
Preserve PR #69 as the immutable failed first cold-start, close every provenance and evidence-closure gap found by its independent review, and rerun the same one-line Claude handoff without owner repair. The queue stays non-mergeable.…
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0041.mdtext/markdownem:documentation:sha256:9d7c5c5d9d31dc63f42c1aa4c006e0396e8726c0bbbbf87e8bad79a91657030d10a404b7ff6602bc6b453dbb22eb60168ae0fcf106e42a2dc1d24ba28c549facdocumentation
Preserve autonomous submission PR #72 as the immutable second cold-start receipt, fix the exact-head CI binding it exposed, prevent agents from selecting accepted or closely restated work, and replace contributor-invented runtime…
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0042.mdtext/markdownem:documentation:sha256:bcd93ae4538622c19a47b59d4d71cc8817058a78592fae7b005c08e66c8f607deedcfa0f6e5ad0f0fb4b69f4d18a50cd164fdc56988091961a9fe056d707d028documentation
Apply the owner-approved Register visual grammar to every generated Epistemedia human surface while preserving the exact accepted knowledge record and every machine-readable representation.
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0043.mdtext/markdownem:documentation:sha256:5d78c264199a4f3894b54494c80ab3022420fc2389acda54c57801f9439315a64a7b93bffbd818da9dc70b9f9286e666af637888ea4dbeda7a5901ba50b0e1cedocumentation
The EM-0043 Register adapter is materially clearer than the prior site, but the deployed desktop layout underuses the canvas. At a 1692 px viewport, main is 1080 px wide and begins 306 px from the left edge. Repeated 112 px metadata rails…
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0044.mdtext/markdownem:documentation:sha256:d9b9960d4c218ef3552d6156ab1df61ea2d4c783c4b74b51128cda2f23d8b9f602fbc80144b7340ed4e1344f07e85141e20259f0f0373664672d2656a3ee4555documentation
Prove the next product milestone rather than adding a fifth founder-authored case: an unfamiliar agent can recover the public protocol, submit a bounded docket, and leave a measurable receipt for independent review. Move the already…
Open objectMarkdown twinAccepted source
documentationdocs/execution-plans/EM-0045.mdtext/markdownem:documentation:sha256:d96d8ffe5618cdf638bab28f78e449fd10d03a0c68b8a84ab538bda57c5a7574baf1a5db213ef9c6d3a666fb8462120e304219e939fee2bc1833dba25db9019bdocumentation
Epistemedia governance controls procedure, authority, admission, resources, disclosure, and interoperability. It does not vote propositions into universal truth.
Open objectMarkdown twinAccepted source
documentationdocs/governance.mdtext/markdownem:documentation:sha256:f4b7f1ab01b96177383f211aef554aff3ed69f9fb56dbc09fe2a2fc1886eb53a2b2e73ec9cad599e976a35c3c31479d47adee72e341f9a854f0e484787dabaaadocumentation
Epistemedia does not maintain separate editorial truths for people, API clients, MCP agents, and local tools. Each interface adapts one disclosure-safe catalog and projection manifest.
Open objectMarkdown twinAccepted source
documentationdocs/interfaces.mdtext/markdownem:documentation:sha256:5600741764a7b3f15581645b442c3694562be191230e0acb8104f74c8c9694a229d1eddb3792fa92efb04fbb6a17da89ba0e58fa79233f769fe435c0fe71478ddocumentation
Start with the four-case failure-mode map on the homepage or How We Know index: overgeneralization, false independence, a missing comparison class, and scope inflation. Each case page is a reproducible projection, not an anonymously…
Open objectMarkdown twinAccepted source
documentationdocs/launch.mdtext/markdownem:documentation:sha256:2ac01397407a8ee42f85ae1c3712e47a52d259b8f7755885727e9bbc423fb5697d0a089abac879f165dc7e9ad3ea293d658fab5ad0a572b4faadcd9316b8f700documentation
Archived bootstrap handoff. The repository-publication and protected-contribution steps below are complete. The default-hostname Pages bootstrap is also live. Use ops/activation/2026-08-22-pages-bootstrap.md for current evidence and…
Open objectMarkdown twinAccepted source
documentationdocs/pre-public-owner-handoff.mdtext/markdownem:documentation:sha256:859e311841076405f0ed54de7e344977e19081494c06c5bde44fb4877fb1d7ad6c55e03eca8ff7f0a58cbdd71c707de6bb2c52dccc72f967d2c5059fed2a46e9documentation
Status: owner-directed product brief, 2026-08-21.
Open objectMarkdown twinAccepted source
documentationdocs/product-direction.mdtext/markdownem:documentation:sha256:945cca70472e68b03931c3433df70245931426536ff40e2373fed5f40eb74634860748b56eecda4ee8e744f984f1ad77b950cf9a97dc9d9e05da2b89cb262c37documentation
Status: v1 transport preflight failed and is retained; the v2 packet passed EM-0026 source review; an EM-0029 candidate dossier now exists and awaits exact-head independent review; research only.
Open objectMarkdown twinAccepted source
documentationdocs/research/case-002-agent-citation-lineage.mdtext/markdownem:documentation:sha256:a16ca25bcf6ad3470b4f122f22424ee40683cf22c0c53f3f5b55510a89f15f42dc444f08c8799ebba4287ac75f7d71ed8697f79a6da7fc72d07e4736aae8fadcdocumentation
Status: corrected content-addressed author research packet complete; independent re-review pending. This note does not admit or publish Case 003.
Open objectMarkdown twinAccepted source
documentationdocs/research/case-003-gpt-4-bar-exam-percentile.mdtext/markdownem:documentation:sha256:14a6353af1d94e333a6c15f848d01b3453c5f71cad9a0c6cdf98b67c9ee62a9db0737d145aef503daae8024965de65c358530a722582e740fd219ddef23bb369documentation
Status: content-addressed author research packet complete; independent review pending. This note does not admit or publish Case 004.
Open objectMarkdown twinAccepted source
documentationdocs/research/case-004-mehrabian-7-38-55.mdtext/markdownem:documentation:sha256:b18f1a33511ed07e851efcdd168eb90f689fd0a5afe7adc62c0e3fa26118a0f47e0d8e8d928476c3080a52d1d0b22253962698ddbe49e4cbbf60b07d07734fa4documentation
Status: accepted source-readiness synthesis. Exact-head reviewed and admitted through protected PR #50 at cbb029bd336404e5bc654e939308247317eaa153; none of these three candidates was admitted as a dossier or public case by EM-0027.
Open objectMarkdown twinAccepted source
documentationdocs/research/how-we-know-library-preliminary.mdtext/markdownem:documentation:sha256:ec6ff7dcb3b14a1459ff1d001e964abf516cb4e8e905d6f43324e11c911aa6d6d8fa724d9e76b1da937463180a6714ba48de2229ca40e56108570cefe3d5907edocumentation
Compile the repository’s own architecture, governance, tasks, code, tests, and releases through the same public catalog used by every interface. Establish deterministic identity, disclosure safety, and agent-native operation.
Open objectMarkdown twinAccepted source
documentationdocs/roadmap.mdtext/markdownem:documentation:sha256:2f1a4a7ef2d8194d184f06a300251ba055541be0029e1ca0ddef5a299063d4c5bcb6525b2343b8dd203b3a89fccdae5c5330d12313d061e31f03eac88a4ca8d41 object
governance record
Governance proposals, evaluator reports, canary results, promotion decisions, rejections, quarantines, forks, and forward-only disablements are append-only accepted records.
Open objectMarkdown twinAccepted source
governance-recordgovernance/README.mdtext/markdownem:governance-record:sha256:8ecb10ca0b75e0d285af3757bb9b5210589243b19086a34eeb8fb3cbeb195f6204146d4bc887c37dbbc7e049fc08acc8b8004b333fd6fefc8ca4154e6cb0978d1 object
policy
Accepted policy in the public catalog.
Open objectMarkdown twinAccepted source
policypolicies/manifest.jsonapplication/jsonem:policy:sha256:5aeb962d88c84193d08b338149e22487723c8f43d4e29f330aa36559c62ac457bdf17a66286d7f5fd99308fe5eca500b0e140957448203e9a0354d613e322dd1Build receipt
em:projection:sha256:57dfdd0ef15dbdc5606845bce4d965b1c08129c791c7461e57fe81eddc65c0b4em:catalog:sha256:9bfc972213cba2cde167386103dc2c011ee74639fb7f0794c54120fbbdef1a5dem:frontier:sha256:f33be3eae4c75232d56750ef9a1aa79d96274ece3417d65a75c1391bf61a81bff92846570180dfa4511263f8ba98ecd18f7772c9commons-balanced-v0.1public-noninterference-v0.1epistemedia/0.2.0