Dropdown Logistics

EXCELLIGENCE

A governed knowledge graph for Excel intelligence. What one person knows, structured so thousands can learn it.

The Problem

Flat Lookup

Every Excel resource on the internet does the same thing: name → definition. ExcelJet, Microsoft docs, AI answers. No progression. No dependencies. No architecture. A dictionary for a language that requires grammar.

Invisible Expertise

The difference between someone who uses VLOOKUP and someone who architects MAKEARRAY engines is 200+ hours of trial and error. That knowledge lives in one person's head. When they leave, it walks out the door.

Anti-Pattern Debt

Merged cells, volatile functions, hardcoded values, nested IFs. Every organization has spreadsheets built on these patterns. Nobody has a governed system that identifies them and maps the path to governed alternatives.

The gap isn't knowledge. It's structure. Excel expertise exists in abundance — scattered across tutorials, forums, and individual practice. What doesn't exist is a governed system that connects patterns to prerequisites, progressions to anti-patterns, and beginner concepts to expert architecture through typed, navigable relationships.
What We've Already Built

The Proof

50
Governed Entries
118
Typed Edges
574
Validation Checks Passed
0
Failures
February 2026
Reddit Validation
Posted as “Building an Excel Glossary Tool“ on r/excel. Reached #1, 13,000+ views, 37 comments, 25 shares, 91% upvote ratio. The governed architecture underneath was invisible. CottageHumble strategy.
February 27, 2026
Schema Locked
Nine AI models reviewed the schema independently. Unanimous approval. Zero revisions. 28 governance decisions documented. The architecture was proven before the first entry was written.
March 2026
Connor's Threshold
50 entries written and validated across 5 batches. 574 automated checks. Zero failures. The schema survived contact with real content. External validation: “If it survives 50 entries, it's real. If it collapses, it was architecture theater.“
March 2026
Live Explorer
Interactive force-directed graph at dropdownlogistics.com/excelligence. Two modes: Explore (click any node for full details) and Path Finder (trace the governed route between any two entries). Shareable URLs per entry.
The Product

Excelligence

A governed knowledge graph that turns Excel expertise into navigable, assessable, teachable architecture.

Explorer
Community
Individual learners, Excel enthusiasts, students
Free
Always free. No login required.
  • Full graph explorer (50+ entries)
  • Path Finder between any two entries
  • Entry detail: intent, examples, failure modes
  • Filter by tier, type, and edge type
  • Shareable entry URLs
  • Anti-pattern library with governed alternatives
Recommended
Professional
Analysts, auditors, controllers, team leads
$29/mo
Per seat · Annual billing available
  • Everything in Community
  • Guided learning tracks (Auditor, Dashboard, PQ)
  • AI-grounded search (ask in plain language)
  • Companion Excel workbook (Power Query connected)
  • AI Proficiency Assessment (MindFrame integration)
  • Difficulty scoring and personalized next-steps
  • Excel version compatibility filtering
  • Priority access to new entries and tracks
Enterprise
Institutional
Audit firms, FP&A teams, training departments
Custom
Annual license · Dedicated onboarding
  • Everything in Professional
  • Private registry fork (org-specific patterns)
  • Team skill gap analysis dashboard
  • Custom learning tracks per role
  • Workbook Scanner (anti-pattern detection)
  • Certification program (Excelligence Level 1/2/3)
  • API access for internal tool integration
  • Quarterly governance reviews
Add-Ons
Workbook Audit Upload any workbook. Receive a governed pattern report with anti-pattern detection and upgrade paths. $500 / workbook
Custom Track Design A learning track built for your team's specific role, toolset, and skill gaps. Mapped to the graph. $2,000 / track
Registry Consulting We build your organization's pattern registry using the Excelligence schema. Your knowledge, governed. $10,000 / engagement
The person who spent ten years auditing systems built the knowledge graph that teaches them.
Excelligence exists because one auditor kept building Excel systems that nobody could understand after he left the room. Assurance maps, commission engines, trading analytics, campaign dashboards — all built with the same architecture, all documented only in his head. The LET function that powers every DDL dashboard isn't in any tutorial. The MAKEARRAY engine that generates dynamic matrices isn't in any course. The governance rules that prevent merged cells, hardcoded values, and volatile functions aren't in any certification program.
So he built the system that encodes what he knows. Not as a glossary — as a graph. Every pattern connected to its prerequisites. Every anti-pattern connected to its governed alternative. Every entry validated against eight governance rules and 574 automated checks. The schema was locked by a nine-model AI council before the first entry was written. The graph was live before the 50th entry was validated. And the topology revealed things about Excel cognition that no flat reference could show — like the fact that LET, not XLOOKUP, is the structural center of everything.
CPA · 10+ Years Internal Audit · 44 Governed Systems · 65 Published Standards · One Person
Explore the Graph →
Operator: Dave Kitchens, CPA
Email: dave@dropdownlogistics.com
Product: dropdownlogistics.com/excelligence
EXCELLIGENCE · Dropdown Logistics · Chaos → Structured → Automated
Confidential · For discussion purposes only