Research observatory / publication desk

Research Set Briefing

Prepare a brief from a saved collection of profiles and sources. Documented relationships and original definitions remain attached to the evidence.

Profiles: 22 families
Pair routes: 11 connected
Supporting edges: 1exact declarations
Sources: 70 route-bound / 7 profile-only

Publication lineage3 audience modes

2Profiles

1Pair routes

1Exact edges

7Custody sources

Search enginesMarket change field

Declared routesDirect edges and multi-hop paths remain distinct.

Bounded interpretationNavigation never becomes liability, causation, or market definition.

Reusable publicationShare URL, Markdown, JSON, BibTeX, RIS, and print output.

Research memo / deterministic evidence synthesis

Competition research memo: Search engines and Market change field

A methods-forward memo across 2 canonical profiles, preserving exact declarations, multi-hop research paths, source custody, and open empirical questions.

Profiles: 2; 2 evidence families
Pair routes: 1; 1 connected
Direct pairs: 1; Exact endpoint edges
Supporting edges: 1; 0 connectors
Sources: 7; 0 route-bound / 7 profile-only

Executive synthesis

What the selected evidence establishes

1 of 1 profile pair has at least one direct declared edge; 0 are connected only through a reproducible multi-hop route. The packet carries 1 exact supporting edge and 7 source-custody records: 0 route-bound and 7 profile-linked only without aggregating the profiles into a score.

1 direct0 bridged0 disconnected

Canonical scope

Profile evidence register

2 profiles

Market profile / estimated_public

U.S. search engine usage

All-platform U.S. search engine usage share from StatCounter Global Stats for April 2026. The market is an observed usage-share proxy, not search advertising revenue.

Latest HHI: 7,359
Evidence context: United States / 2026

Research briefing / current insight

Latest market-structure signals moved in both directions.

Fifteen HHI, CR4, and leading-share comparisons preserve their own product boundary, denominator, source, and observed interval. The direction count is an inventory, not a vote about competition. HHI points, CR4 points, and leading-share points across different products and periods are not pooled or ranked.

Exact signals: 15
Evidence context: AR-CI-2026-01 / Domain readout

Priority routes

Declared links and open questions

Direct declaration / 0 source records

Search enginesMarket change field

1 exact declared edge: Covered market profile.

Research questionHow should the timing, scope, and competitive significance of the declared Covered market profile between Search engines and Market change field be tested with additional observations?

Interpretation boundary

The workspace assembles canonical profiles and declared Atlas edges for research navigation. A direct edge preserves only its encoded evidence statement. A multi-hop route does not establish a direct endpoint relationship, make unlike measures comparable, define a legal market, assign ownership, control, liability, or causation, or prove a policy effect.

Profile-linked custody records document the selected profiles. They do not substantiate a selected pair route unless the same source also appears on a route-bearing edge.

Publication standard

A dossier records the evidence route before it frames the research question.

Every audience mode uses the same profiles, paths, edges, and sources. Only the framing of the next question changes.

01
Declare the scope
Name each canonical profile and retain its metric, period, status, and profile route.
02
Separate route status
Direct, bridged, and disconnected pairs remain explicit throughout the packet.
03
Publish the boundary
Carry source custody, edge guardrails, and missing evidence into every export.

Research handoffs

Continue in the underlying analytical surface.

The dossier frames an evidence route. Profiles, the Atlas, source dossiers, and public data remain authoritative.