LIMEN Step 4: Inputs Closed, Device Still Open

Executive Summary

Step 4 is complete at the input-record level. Science, Product, Legal, Business, and Backend overlays passed fresh Independent QA and Integrator acceptance.
The concept is clearer, but no device exists. The accepted records define evidence boundaries, failure routing, governance, research prioritization, and abstract Backend constraints. They do not select a technology or authorize implementation.
The next useful work is narrower, not more universal. Choose one bounded problem and comparator, then make the unselected R0 software decisions and promote reference vectors before any software-only implementation.
Project status stays REVISION. Release, publication, deployment, fabrication, biological work, animal work, human work, and product development remain unauthorized.

Source: LIMEN Step 4 Integrator acceptance indexTable: SOURCE_NOTES.md

Exact accepted lane packages, QA evidence, Integrator acceptance, and report-shaping notes.

Documentation closure did not create an implementation

Five lane-owned input overlays are accepted. No architecture, Backend technology choice, reference-vector set, R0 runtime, physical bench, biological interface, or device is accepted or implemented. The bars show exact record counts, not percent complete.

Source: LIMEN Step 4 Integrator acceptance indexTable: SOURCE_NOTES.md

Exact accepted lane packages, QA evidence, Integrator acceptance, and report-shaping notes.

Accepted records versus implemented outputsExact Step 4 record counts; not a completion percentage.

Source: Step 4 accepted-record and implementation-gap countTable: gap_counts

Exact counts transcribed from the accepted Step 4 records indexed in SOURCE_NOTES.md.

WITH gap_counts(layer, count, meaning, sort_order) AS (VALUES ('Accepted lane input overlays', 5, 'Science, Product, Legal, Business, and Backend exact records', 1), ('Selected Backend technology choices', 0, 'All ten remain unselected', 2), ('Promoted reference-vector sets', 0, 'R0-PROM-001 remains open', 3), ('Implemented R0 runtimes', 0, 'No implementation exists', 4), ('Accepted physical devices', 0, 'No bench or biological device is accepted', 5)) SELECT layer, count, meaning FROM gap_counts ORDER BY sort_order

Accepted records versus implemented outputs data
Layer	Count	Meaning
Accepted lane input overlays	5	Science, Product, Legal, Business, and Backend exact records
Selected Backend technology choices	0	All ten remain unselected
Promoted reference-vector sets	0	R0-PROM-001 remains open
Implemented R0 runtimes	0	No implementation exists
Accepted physical devices	0	No bench or biological device is accepted

What Step 4 actually closed

Each lane closed one class of research input. Acceptance is limited to the exact records below; it does not transfer authority across lanes.

Accepted Step 4 input records

Five lane-owned overlays; acceptance closes documentation and semantics only.

Source: Accepted Step 4 lane record mapTable: lane_closure

Exact lane closure rows derived from the accepted records indexed in SOURCE_NOTES.md.

WITH lane_closure(lane, closed, still_open) AS (VALUES ('Science', 'Evidence lineage, route boundaries, prospective comparator rule', 'Chronic exact-route stability, selectivity, encoding, reversibility, advantage'), ('Product', 'Deterministic state, guard, provenance, recovery, and calibration semantics', 'Architecture, biological values, parts, implementation, physical design'), ('Legal / ethics', 'Research-only governance map and neutral A/B/C option boundaries', 'Classification, approval, ethics authorization, regulatory path, FTO'), ('Business', 'Problem/population routing and comparator bookkeeping', 'No branch selected; LIM-X-GAP-001 remains open or blocked'), ('Backend', 'Semantic-input blockers and abstract decision constraints', 'All ten technology choices, reference-vector promotion, runtime, implementation')) SELECT lane, closed, still_open FROM lane_closure ORDER BY lane

Accepted Step 4 input records
Lane	What closed	Still open
Backend	Semantic-input blockers and abstract decision constraints	All ten technology choices, reference-vector promotion, runtime, implementation
Business	Problem/population routing and comparator bookkeeping	No branch selected; LIM-X-GAP-001 remains open or blocked
Legal / ethics	Research-only governance map and neutral A/B/C option boundaries	Classification, approval, ethics authorization, regulatory path, FTO
Product	Deterministic state, guard, provenance, recovery, and calibration semantics	Architecture, biological values, parts, implementation, physical design
Science	Evidence lineage, route boundaries, prospective comparator rule	Chronic exact-route stability, selectivity, encoding, reversibility, advantage

The concept is now controlled, not build-ready

The accepted record describes a two-way information question with explicit invalid states:

Peripheral source → observation candidate → provenance and artifact gate → bounded classification → computation → return request → authorization or inhibition → acknowledgement.

A command is not proof of delivery; a classifier output is not a neural fact; common infrastructure is not a universal biological map.

Source: LIMEN Step 4 Integrator acceptance indexTable: SOURCE_NOTES.md

Exact accepted lane packages, QA evidence, Integrator acceptance, and report-shaping notes.

What the accepted record means

Plain-language interpretation of the accepted evidence and contracts.

Source: LIMEN accepted-record meaning mapTable: meaning_map

Plain-language synthesis of the accepted Science, Product, Legal, Business, and Backend records.

WITH meaning_map(area, now_known, not_proven) AS (VALUES ('Human evidence', 'Short bounded direct nerve recording and stimulation have occurred in the same participants', 'Chronic fully implanted exact-route operation or pure direct-ENG-only closed loop'), ('Common platform', 'Schemas, provenance, uncertainty, calibration lifecycle, inhibition, and audit can be common', 'A universal biological map across nerves, people, species, or applications'), ('Architecture', 'Electronic, biohybrid, and combined families remain comparable research options', 'Selection, feasibility, superiority, safety, or build readiness of any family'), ('Execution', 'Invalid identity, provenance, artifact, or permission must inhibit consequential output', 'A working state machine, runtime, hardware controller, or safe implementation')) SELECT area, now_known, not_proven FROM meaning_map ORDER BY area

What the accepted record means
Area	Now controlled	Not proven
Architecture	Electronic, biohybrid, and combined families remain comparable research options	Selection, feasibility, superiority, safety, or build readiness of any family
Common platform	Schemas, provenance, uncertainty, calibration lifecycle, inhibition, and audit can be common	A universal biological map across nerves, people, species, or applications
Execution	Invalid identity, provenance, artifact, or permission must inhibit consequential output	A working state machine, runtime, hardware controller, or safe implementation
Human evidence	Short bounded direct nerve recording and stimulation have occurred in the same participants	Chronic fully implanted exact-route operation or pure direct-ENG-only closed loop

The next valid work is a bounded R0 decision sequence

Do not jump from documentation closure to a device blueprint. The next actions must preserve the research-only boundary and remain reversible.

Next dependency-ordered actions

Research and software-only gates before any reconsideration of physical work.

Source: Dependency-ordered LIMEN next actionsTable: next_actions

Integrator dependency sequence derived from the accepted Step 4 blockers and exclusions.

WITH next_actions(step, action, acceptance) AS (VALUES ('1', 'Freeze one bounded problem, population, function, endpoint, and lower-burden comparator', 'Science plus Legal/Ethics accept the boundary; no universality claim'), ('2', 'Resolve the ten Backend R0 technology decisions without importing device assumptions', 'Owner-correct decision record passes fresh QA and Integrator review'), ('3', 'Create and Science-accept exact synthetic reference vectors', 'R0-PROM-001 closes; provenance and failure cases reproduce'), ('4', 'Implement and test the software-only R0 simulator', 'No hardware or biology; deterministic fail-closed behavior passes independent QA'), ('5', 'Reconsider a non-biological R1 bench only after R0 evidence', 'Fresh owner packages, comparator rationale, and explicit authorization; rejected R1_BENCH_V1 is not reused')) SELECT step, action, acceptance FROM next_actions ORDER BY step

Next dependency-ordered actions
Step	Action	Acceptance condition
1	Freeze one bounded problem, population, function, endpoint, and lower-burden comparator	Science plus Legal/Ethics accept the boundary; no universality claim
2	Resolve the ten Backend R0 technology decisions without importing device assumptions	Owner-correct decision record passes fresh QA and Integrator review
3	Create and Science-accept exact synthetic reference vectors	R0-PROM-001 closes; provenance and failure cases reproduce
4	Implement and test the software-only R0 simulator	No hardware or biology; deterministic fail-closed behavior passes independent QA
5	Reconsider a non-biological R1 bench only after R0 evidence	Fresh owner packages, comparator rationale, and explicit authorization; rejected R1_BENCH_V1 is not reused

Questions that still decide the direction

Which single problem and population justify continued research?
Which lower-burden external or temporary comparator sets the baseline?
Can a decision-relevant direct nerve signal remain attributable and stable long enough for that bounded use?
Can stimulation artifact, biological drift, and source substitution be detected before consequential output?
Does any invasive branch offer a material advantage that survives safety, reversibility, maintenance, ethics, and regulatory burden?
Which exact R0 reference vectors can Science accept before Backend implementation begins?

Source: LIMEN Step 4 Integrator acceptance indexTable: SOURCE_NOTES.md

Exact accepted lane packages, QA evidence, Integrator acceptance, and report-shaping notes.

Caveats and assumptions

The human evidence remains bounded and short-term for the exact direct-nerve two-way route. Chronic direct recording plus stimulation in one fully implanted human platform remains open. Broad novelty, universality, feasibility, safety, efficacy, patentability, FTO, readiness, and availability are not established. R1_BENCH_V1 remains rejected and unaccepted.

Source: LIMEN Step 4 Integrator acceptance indexTable: SOURCE_NOTES.md

Exact accepted lane packages, QA evidence, Integrator acceptance, and report-shaping notes.

Sources

LIMEN Step 4 Integrator acceptance indexSOURCE_NOTES.md · repository
Exact accepted lane packages, QA evidence, Integrator acceptance, and report-shaping notes.