Longitudinal and Cross-Sectional Research

Overview

Use this skill to turn a research target into a two-part deep research report:

1. Reconstruct how the subject emerged and evolved over time.
2. Compare the subject against the current field, competitors, or substitutes.

Prioritize causal explanation, narrative readability, and source-backed judgment over list-like summaries.

Fit Check

Use this skill when the user wants:

• a deep research report instead of a short answer
• both historical development and current competitive positioning
• analysis of a product, company, organization, technology, concept, or person
• a report that explains why key turning points happened, not just what happened