Longitudinal Health Signals

Small changes, repeated over time, can become reviewable signals.

The flap of a butterfly’s wings can be felt on the other side of the world.

Butterfly Effect explores how changes within a person’s sleep, overnight physiology, movement, context, and daily self reported state may relate to later burden. The public surface turns that idea into a governed interpretation system: quality gates, route specific evidence, stability checks, feature dependency audit, confidence scoring, participant return, professional review, and a future validation pathway.

Visual System

The project now has a clearer visual language for signal, quality, uncertainty, and review.

Each visual element has a job: separate what is observed, show where quality constrains interpretation, and keep the output tied to evidence instead of turning it into a single score.

Sleep

Night structure Timing, continuity, and recovery context stay visible before any interpretation is attempted.

Physiology

Overnight load Physiological traces are treated as signal candidates, not explanations on their own.

Movement

Daily rhythm Movement patterns help locate context and burden, especially when compared against the same person.

Self report

Daily state Subjective labels give the engine a human anchor for stress, clarity, burden, and recovery.
Within-person signal timeline A visual timeline showing repeated observations, a personal baseline, quality gates, and bounded review outputs. Personal baseline band quality checked uncertainty visible review only Daily observations Bounded signal

Rule 01

Repeated beats matter The visual system should make longitudinal change easier to read than isolated values.

Rule 02

Quality is part of the message A signal is not shown as meaningful unless its quality state is carried with it.

Rule 03

Limits stay attached Research-only outputs remain useful only if uncertainty and evidence limits stay visible.

From Signal To Surface

The project is easier to understand when it is read as a flow, not as a stack of technical labels.

This visual map is the simplest entry into the system: what is observed, how quality is controlled, how the engine routes and audits interpretation, and what the public surface returns for review.

Visual Map

One movement from daily life to reviewable signal.

The project is not a single score. It is a controlled interpretation path: repeated observations are cleaned, routed through the right layer, and returned with their limits still attached.

Observed streams remain separate until quality is checked. Only usable segments move into interpretation. Outputs stay research only unless future validation supports more.
From observed streams to governed review Sleep, physiology, movement, context, and self report pass through quality gates, then through separated engine layers, before participant, professional, and institutional review. OBSERVED STREAMS Sleep timing Night physiology Movement Context Self report QUALITY GATE missingness timing confidence LAYER ROUTER Interpretation engine Night layer Event layer Daily layer Claims stay separated REVIEW SURFACES Participant Professional Institution QUALITY FIRST NO SINGLE FALSE SCORE EVIDENCE + LIMITS
The useful idea is not prediction in isolation. It is a governed interpretation engine where each output keeps its quality status, confidence, evidence base, dependency profile, and claim boundary visible.
Observed streams Sleep, night physiology, movement, context, and daily self report stay separated.
Quality gate Missingness, timing, and confidence decide whether a segment can move forward.
Interpretation engine Night, event, daily, and portable layers route claims without collapsing them into one score.
Review surfaces Participant, professional, and institutional views keep evidence and limits attached.

Visible cards

40 night, event, daily, and family surfaces exposed without flattening them into one false product claim

Accepted units

15 cards or families with signals the current evidence can defend inside their intended scope

Experimental units

18 research layers that remain useful but still fall below deployment or transport thresholds

Main bottleneck

Night signal portability the next scientific challenge is proving that night-based patterns remain meaningful across participants, cohorts, devices, and datasets

Audience Entry

The same project has three different public reading paths.

This switcher keeps the entry point readable. It lets a new visitor move straight into the right surface instead of reading the entire stack in the wrong order.

Research posture

One project, five visible layers, five different evidentiary roles.

Once the core idea is clear, the rest of the site stays readable by showing where each layer is strong, where it is limited, and what kind of claim it can legitimately carry today.

Night Layer Within-cohort interpretation
High · Held-out R² 0.4350 Limited Operational
Limited by night signal portability
Event Layer Acute stress portability
High · R² 0.3164 Portable Separate stack
Must stay separate from night claims
Daily Challenge Layer Temporal challenge layer
Moderate · R² 0.1685 Challenge only Challenge
Good within cohort, weak across cohorts
Non-Stress Daily Layer Supportive daily reading
High · R² 0.3454 Challenge only Mixed support
Support visible, portability limited
Non-Stress Portable Families Portable research family
Low · Portable mean R² 0.0202 Emerging Research only
Below transport readiness

Pages

The home stays light. The detail lives on dedicated pages.

The front page should orient, not flood. System structure, validation, evidence, and live analytical views now sit on their own pages so the entry point stays readable.

Pitch

Scientific Pitch

A compact 3-5 minute reading path for the scientific case, the claim boundary, and the studies currently in process.

Open page

System

System

How the project is structured across night, event, daily, and portable-family layers, and why those boundaries matter.

Open page

Built

Built

What is already implemented: nightly routes, event stress, daily challenge layers, governance, evidence, and support.

Open page

Validation

Validation

What the current evidence can support, what it cannot, and where transport still fails across cohorts.

Open page

Evidence

Evidence

The open cohorts, support cohorts, and evidence-linked reporting stack underneath the public surface.

Open page

Participant

Participant Return

A participant facing research return layer and a professional review companion built on approved nightly stress routes, not on a separate consumer stack.

Open page

Study

Participant Study

The prospective pilot workflow: short daily labels now, wearable export later, and governed within-person fusion after the collection window.

Open page

Views

Views

Direct access to the live dashboards and layer-specific surfaces already materialized in the repo.

Open page