eduKateSG · DEEP READING INDEX · QUIET ROUTING LAYER
Deep Reading Index
This is the quiet safety-net underneath the eduKateSG knowledge system. Normal reading should begin in a subject or system hub. This index exists so older, specialist and deep pages remain reachable even when they do not belong in the main navigation.
Start with Learning Hubs for school learning, Education for the larger learning system, World & Knowledge for wider knowledge systems, or the eduKateSG Ecosystem Atlas for the current owner map and decade-scale roadmap. Use this index when you deliberately want older, specialist, experimental or long-tail material beyond those normal routes.
Published Posts
Articles, guides, series entries, vocabulary work, tuition/local pages and current longform publishing.
-
Why English? | Writing a Research Certificate Corrective-Effectiveness Sustainment Plan
-
Why English? | Writing a Research Supplier Sustainment-Drift Corrective-Action Plan
-
Why English? | Writing a Research Recovery Effectiveness Sustainment-Drift Review
-
How to study Primary 6 Foundation Chinese | MOE Syllabus
-
How to study Primary 5 Foundation Chinese | MOE Syllabus
-
How to study Primary 6 Tamil | MOE Syllabus
-
How to study Primary 6 Malay | MOE Syllabus
-
Why Vocabulary is Important in 21st Century | Sorting Blue-Bin Recycling from E-Waste and Contaminants
-
Why Vocabulary is Important in 21st Century | Distinguishing Flood Risk Alerts from Confirmed Flash Floods
-
How to Perform in PSLE | Learner’s Guide Vol 0147 | English, Mathematics and Science: Use a Category Label to Organise Evidence, Not Replace It
-
How to Perform in PSLE | Learner’s Guide Vol 0146 | Science: Separate the Direction of a Force From the Direction of Motion
-
How to Perform in PSLE | Learner’s Guide Vol 0145 | Mathematics: Put Events on a Timeline Before You Subtract Clock Times
-
Why Vocabulary is Important in 21st Century | Reading MRT Lift Outage Notices and Finding Step-Free Access
-
How to Perform in PSLE | Learner’s Guide Vol 0144 | English: Track the Scope of Not, Never and No Longer Before You Paraphrase
-
How to Study G2 Nutrition and Food Science | SEC Syllabus K235
-
How to Study G2 Geography | SEC Syllabus K226
-
How to Study G2 History | SEC Syllabus K227
-
How to Study G2 Humanities (Social Studies, Literature in English) | SEC Syllabus K231
-
Why Vocabulary is Important in 21st Century | Comparing Singapore Energy Labels Beyond the Tick Rating
-
Primary 6 PSLE Science Tuition | Boon Keng Weekday vs Weekend Parent Dilemma
-
Primary 5 Science Tuition | Boon Keng Weekday vs Weekend Parent Dilemma
-
Primary 4 Science Tuition | Boon Keng Weekday vs Weekend Parent Dilemma
-
Primary 3 Science Tuition | Boon Keng Weekday vs Weekend Parent Dilemma
-
Secondary 4 English Tuition | Chinatown Weekday vs Weekend Parent Dilemma
-
Secondary 3 English Tuition | Chinatown Weekday vs Weekend Parent Dilemma
-
Secondary 2 English Tuition | Chinatown Weekday vs Weekend Parent Dilemma
-
Secondary 1 English Tuition | Chinatown Weekday vs Weekend Parent Dilemma
-
How to study Primary 6 Chinese | MOE Syllabus
-
How to study Primary 5 Tamil | MOE Syllabus
-
How to study Primary 5 Malay | MOE Syllabus
-
How to study Primary 5 Chinese | MOE Syllabus
-
Primary English Exam Prep Tuition | Punggol Drive Weekday vs Weekend Parent Dilemma
-
PSLE English Tuition | Punggol Drive Weekday vs Weekend Parent Dilemma
-
Primary 6 English Tuition | Punggol Drive Weekday vs Weekend Parent Dilemma
-
Primary Mathematics Exam Prep Tuition | Bendemeer Weekday or Weekend Parent Dilemma
-
Primary 5 English Tuition | Punggol Drive Weekday vs Weekend Parent Dilemma
-
PSLE Mathematics Tuition | Bendemeer Weekday or Weekend Parent Dilemma
-
Primary 4 Mathematics Tuition | Kembangan Weekday vs Weekend Parent Dilemma
-
Primary 6 Mathematics Tuition | Bendemeer Weekday or Weekend Parent Dilemma
-
Primary 3 Mathematics Tuition | Kembangan Weekday vs Weekend Parent Dilemma
-
Primary 5 Mathematics Tuition | Bendemeer Weekday or Weekend Parent Dilemma
-
Primary 2 Mathematics Tuition | Kembangan Weekday vs Weekend Parent Dilemma
-
Primary 1 Mathematics Tuition | Kembangan Weekday vs Weekend Parent Dilemma
-
How Science Works | Why Land Rises After Heavy Ice Disappears
-
Why English? | Writing a Research Privileged-Access Control Capacity Resilience Reopened-Finding Corrective-Action Sustainment Exercise Improvement Sustainment-Drift Corrective-Action Effectiveness Review Sustainment Plan Sustainment-Drift Review Corrective-Action Plan Effectiveness Review
-
Why English? | Writing a Research Certificate-Status Service-Retirement Routine-Watch Exercise Remediation Sustainment-Drift Corrective-Action Sustainment-Drift Corrective-Action Effectiveness Review Sustainment Plan Sustainment-Drift Review Corrective-Action Plan Effectiveness Review
-
Why English? | Writing a Research Supplier-Transition Documentation Preventive-Control Drift Incident Corrective-Action Sustainment-Drift Corrective-Action Effectiveness Review Sustainment-Drift Review Corrective-Action Effectiveness Review Sustainment Plan Sustainment-Drift Review
-
Why English? | Writing a Research Recovery Data-Release Reissue Incident Corrective-Action Sustainment-Drift Corrective-Action Sustainment Effectiveness Improvement Effectiveness Sustainment-Drift Review Corrective-Action Plan Effectiveness Review Sustainment Plan
-
How Science Works | How Rocks Record the Direction of an Ancient Magnetic Field
-
How Science Works | How Excitons Move Energy Through a Material
-
Why PDF Comments Disappear After Students Submit Their Work | The Annotation-Layer Test
-
Why Two Correct Answer Keys Can Disagree | The Worksheet Version Test
-
Why the QR Code on a Worksheet May Not Open the Lesson | The Paper-to-Website Handoff
-
Why a Copied Equation Can Mean Something Else | Superscripts, Subscripts and the Paste Trap
-
Why a Black-and-White Worksheet Can Change the Answer | When Colour Was the Only Clue
-
Why Students Follow Every Step but Still Lose the Procedure | The Re-entry Checkpoint
-
Why a Blank Answer Is Not the Same as a Wrong Answer | The Missing-Response Audit
-
Why a Diagram on the Next Page Can Change the Answer | The Split-Reference Problem
-
Why an Online Maths Quiz Can Reject a Correct Answer | The Input-Equivalence Gap
-
How to Perform in PSLE | Learner’s Guide Vol 0143 | English, Mathematics and Science: Decide Whether an Exception Limits a Rule or Breaks It
-
Why a Classroom Poll Can Say 90% Understand When Half the Class Is Silent | The Response-Rate Test
-
Why an Interactive Diagram Works With a Mouse but Not a Keyboard | The Access-Route Test
-
Why a Spreadsheet Turns School Data into Dates | The Auto-Format Trap
-
Why a Matching Worksheet Can Be Solved Without Understanding | The Last-Answer Shortcut
-
Why an Arrow in a Science Diagram Does Not Always Mean Movement | Read Its Job First
-
Why Five Websites Can Still Be Just One Source | Follow the Evidence Trail
-
How to Perform in PSLE | Learner’s Guide Vol 0142 | Science: Compare Rates Only When the Measurement Intervals and Starting Conditions Match
-
Why Turning a Map Changes Left and Right but Not North | The Direction-Frame Test
-
Why a Worksheet Looks Clear on Screen but Fades at the Desk | The Classroom Glare Test
-
Why Submitted Homework May Still Be Invisible to the Teacher | The Attachment-and-Access Test
-
Why a Bubble-Sheet Test Can Reject the Answer a Student Meant | How Optical Mark Recognition Reads Marks
-
How to Perform in PSLE | Learner’s Guide Vol 0141 | Mathematics: Keep a Remainder Attached to Its Unit Before You Decide What the Answer Means
-
Why the Teacher Sounds Clear at the Front but Not at the Back | How Classroom Acoustics Affect Learning
-
Why Repeating a Science Experiment Can Repeat the Same Mistake | The Shared-Bias Check
-
Why Search Cannot Find a Word That Is Visible in a PDF | The Hidden Text-Layer Test
-
Why an eBook Page Number Changes Between Devices | How to Find the Same Passage Again
-
Why a Class Average Can Rise While Some Pupils Fall Behind | The Hidden Distribution Check
-
How to Perform in PSLE | Learner’s Guide Vol 0140 | English: Track What a Linking Phrase Connects Back To Before You Infer the Relationship
-
Why a Downloaded Lesson Can Stop Working Without Wi-Fi | The Hidden-Dependency Map
-
Why a Results Table Can Look Clear but Read in the Wrong Order | The Header-to-Cell Test
-
Why Automatic Captions Can Change a Science Explanation | The Transcript-to-Concept Check
-
Why a Quiz Timer Can Keep Running When the Internet Stops | The Clock-and-Connection Test
-
Why the Wrong Multiple-Choice Option Can Be the Best Clue | Ask for the Reason First
-
Why a Science Diagram Can Be Correct and Still Mislead | Reading the Limits of a Model
-
Why Changing the Story Changes a Maths Problem | The Quantity Map That Survives
-
Why a Worked Solution Can Be Clear Yet Leave a Student Stuck | Find the Missing Decision
-
Why a Correct Quote Can Support the Wrong Answer | The Context-Window Check in Reading Comprehension
-
Why a Student Knows the Assignment but Cannot Start It | The First-Move Problem in Learning
-
Why Sorting a Science Results Table Can Change the Story | Keep Observation Order Separate from Value Order
-
Why a Bus Number Is Not a Number of Buses | How to Tell Labels from Quantities in Mathematics
-
Why English? | Writing a Research Privileged-Access Control Capacity Resilience Reopened-Finding Corrective-Action Sustainment Exercise Improvement Sustainment-Drift Corrective-Action Effectiveness Review Sustainment Plan Sustainment-Drift Review Corrective-Action Plan
-
Why English? | Writing a Research Certificate-Status Service-Retirement Routine-Watch Exercise Remediation Sustainment-Drift Corrective-Action Sustainment-Drift Corrective-Action Effectiveness Review Sustainment Plan Sustainment-Drift Review Corrective-Action Plan
-
Why English? | Writing a Research Supplier-Transition Documentation Preventive-Control Drift Incident Corrective-Action Sustainment-Drift Corrective-Action Effectiveness Review Sustainment-Drift Review Corrective-Action Effectiveness Review Sustainment Plan
-
Why English? | Writing a Research Recovery Data-Release Reissue Incident Corrective-Action Sustainment-Drift Corrective-Action Sustainment Effectiveness Improvement Effectiveness Sustainment-Drift Review Corrective-Action Plan Effectiveness Review
-
How to Perform in PSLE | Learner’s Guide Vol 0139 | English, Mathematics and Science: Separate No Evidence From Evidence of No Effect
-
How to Perform in PSLE | Learner’s Guide Vol 0138 | Science: Separate the Variable Being Tested From the Apparatus Feature That Keeps the Test Fair
-
How to Perform in PSLE | Learner’s Guide Vol 0137 | Mathematics: Keep Exact Values Through the Working and Round Only at the Requested Point
-
How to Perform in PSLE | Learner’s Guide Vol 0136 | English: Use Local Context to Choose a Word Meaning Instead of Its Most Familiar Meaning
-
How Science Works | How Scientists Slow a Light Pulse
-
How Science Works | How Thermal Radiation Reduces Matter-Wave Interference
Published Pages
System owners, hubs, directories, curriculum routes, institutional maps and long-lived reader-facing reference pages. Noindexed publishing controls, manifests and editorial archives are deliberately excluded from this reader index.
-
SG×CareerOS + RoleOS Planner–Predictor v0.1
-
SG Z6 Registry Pack v0.1b — Node Registries (ENG/SCI/HUM) + Core Signatures + Core Protocols VERSION: CivOS Unified Spec v1.x
-
SG Z6 Registry Pack v0.1 — Core Registries (Nodes + Edges + Sensors)
-
SG EducationOS Digital Coordination Spec v0.1 (Z6) — Machine-Readable Registries + Graph IDs + Repair Routing
-
SG Syllabus Lattice Directory v0.1 — HUMANITIES (History / Geography / Social Studies)
-
SG Syllabus Lattice Directory v0.1 — MATH FIRST (Primary → Secondary → JC
-
SG Syllabus Lattice Directory v0.1 — SCIENCE (Primary → Secondary → JC)
-
SG Syllabus Lattice Directory v0.1 — ENGLISH (Primary → Secondary → JC)
-
SG Education Futures Map v0.1 (2026–2036) — Skill Shifts, Coupling Changes, Brittleness Risks, and EducationOS Upgrades
-
SG HGW Forecast Dashboard v0.1 (Z0–Z2) — One-Panel Output for Student + Cohort (Phase×HGW×Risk×Plan)
-
SG HGW Forecast Signature Library v0.1 — Early-Warning Patterns for Coupling Breaks + NIT/NIT-S + Collapse
-
SG-EDU Control Dashboard v0.1 — 3-Minute Weekly Check (Stage × Phase × TTC × Backlog) → Exact Actions
-
SG HGW Forecast Backtest Protocol v0.1 — Rolling 4w/12w Validation + Threshold Calibration
-
SG HGW Forecast Prompt Pack v0.1 (LLM-run) — Hope×Grind×Wisdom Scores + 4w/12w Forecast + Weekly Plan
-
SG EducationOS HGW Forecast Engine v0.1 — Hope×Grind×Wisdom Prediction (Z0→Z4)
-
SG-EDU Timeline Map v0.1 — Birth → Career (Stages, Gates, Windows, Failure Zones, CivOS Control Points)
-
SG-EDU Master Table v0.1 — Stage × Gate × Exercise × Commitment × Risk Flags × Fence Plan
-
SG Student Diagnostic Prompt Pack v0.1 (LLM-run) — Phase + Failure Mode + Coupling Router + Weekly Plan
-
SG Tutor/School Operations Panel v0.1 (Z1–Z2) — Cohort Triage + Remediation Routing + Drift Early Warning
-
Singapore EducationOS City Panel v0.1 (Z3) — City-Scale Pipeline Stability + Variance Control
-
SG-EDU Glossary + ID Registry v0.1 — Copyable Canonical Blocks (PG1/2/3, G1/2/3, PSLE AL, SEC, IP, DSA, AEIS, CCA…)
-
SG-EDU Routing Playbook v0.1 — What To Do Next (By Stage × Phase × TTC)
-
SG Exam Simulation OS v0.1 — Timed Load Simulator + Phase Reliability Dashboard (Primary → Secondary → JC)
-
SG-HUMANITIES Master Graph v0.1 (Primary → Secondary → JC) — Executable Causality Lattice
-
SG-SCIENCE Master Graph v0.1 (Primary → Secondary → JC) — Executable Syllabus Lattice
-
SG-ENGLISH Master Graph v0.1 (Primary → Secondary → JC) — Executable Syllabus Lattice
-
SG-MATH Master Graph v0.1 (Primary → Secondary → JC) — Executable Syllabus Lattice
-
Fencing Method | Vocabulary Failure: Progress Without Proof (No Transfer Test) — and the Fenced Fix
-
Fencing Method | Vocabulary Failure: Random Routine (No Loop, No Repair) — and the Fenced Fix
-
Fencing Method | Vocabulary Failure: Over-Targeting (Too Many New Words at Once) — and the Fenced Fix
-
Fencing Method | Vocabulary Failure: No Review Loop (Silent Decay) — and the Fenced Fix
-
Fencing Method | Vocabulary Failure: Stuffing Big Words (Performance Writing) — and the Fenced Fix
-
Fencing Method | Vocabulary Failure: Thesaurus Inflation (Synonym Swapping Breaks Meaning) — and the Fenced Fix
-
Fencing Method | Vocabulary Failure: Load Collapse (Timed Writing Deletes Vocabulary) — and the Fenced Fix
-
Fencing Method | Vocabulary Failure: The Recognition Trap (Can Spot It, Can’t Write It) — and the Fenced Fix
-
Fencing Method | How Not to Teach Vocabulary — The “Label-Only Trap” (and the Fenced Fix)
-
Fencing Method | How not to teach vocabulary Negative Space (Kindergarten 4–6)
-
Fencing Method | How not to teach vocabulary to Toddler 1-3 Years Old Negative Space
-
What vocabulary lists to use for Primary 6 students
-
Fencing Method | The “AI Vocabulary Boost” That Destroys Real Skill
-
Fencing Method | “Advanced Vocabulary” Can Make Writing Worse
-
Fencing Method | Vocabulary Lists Don’t Work (When You Treat Them Like Content)
-
Fencing Method | Highlighting and Reading Doesn’t Build Usable Vocabulary
-
Fencing Method | Vocabulary Fails When You Don’t Build the Architecture
-
Fencing Method | How Not to Learn Vocabulary
-
Fencing Method | How to Learn Vocabulary
-
Secondary 4 Vocabulary List for GCE O-Level Grade A1
-
Top 100 Vocabulary List Secondary 2 Grade A1
-
Top 100 PSLE Vocabulary “Weapons” (FENCE Word Bank)
-
FenceOS v1.0 — Canonical Almost-Code Spec (LOCKED)
-
Sports Performance OS (SPOS) — CivOS-Equivalent Almost-Code (LLM/Google-First)
-
Vocabulary OS | What Is Vocabulary?
-
V1.1 — How to Improve Vocabulary (Almost-Code / Directory Spec)
-
How to Improve Vocabulary (Vocabulary OS)
-
Civilisation OS (CivOS) — Canonical Specification (Almost-Code)
-
Mathematics Learning Mechanics OS
-
Primary Education OS
-
Early Childhood Education OS
-
Adult Education OS
-
Education OS Index V1.1
-
Exams as a Module
-
Why Schools Exist
-
Education as Anti-Decay Engine
-
Education OS | What Is Education?
-
Secondary 3 Additional Mathematics Tuition Centre — How It Works (Closed-Loop)
-
Secondary 4 Additional Mathematics Tuition Centre — How It Works (Closed-Loop)
-
Additional Mathematics Tuition — How It Works (Closed-Loop)
-
What is the Fencing Method?
-
Get A1 with Punggol Secondary 3 Additional Mathematics Tutor
-
How Punggol Science Tutor help students to do well in Primary 5 Science?
-
The Ground Rebuild of Education
-
How to Learn From AI
-
Education for the People
-
Schooling as a Module
-
Education OS Design Rules
-
Lifelong Education Pipeline
-
Minimum Viable Education (MVE)
-
Technology as a Module
-
Acceleration Limits
-
The Skill Stack Required to Succeed in Studying
-
Threshold of Education
-
Failure Mode Trace
-
Education Phase Flight
-
The Three Primitives of Education
-
eduKate Singapore Tuition at Punggol
-
How Education Goes Through Time
Learning Projects / Portfolio
Project-layer learning systems, prototypes, specialist routes and experimental knowledge architecture.
-
How This World Works | The Nobody and The Good
-
Secondary 1 English Tuition | The Tutor: How to Find the Right Tutor
-
How It Works | The Civilisation Mechanism of “It”
-
How It Works | The Word It In VocabularyOS and EnglishOS
-
How It Works | VocabularyOS and EnglishOS
-
Why Ministry Of Education V3.0 Is Not Just Adult Education
-
What Ministry of Education V3.0 Asks: Can This Person Read the Route Before Surrender?
-
Ministry Of Education V3.0 | Full Ouroboros Router Code
-
MOE V1.0, MOE V2.0, MOE V2.0 Extended and MOE V3.0
-
MOE V3.0 and StrategizeOS
-
MOE V3.0 and HistoryOS
-
MOE V3.0 and NewsOS
-
MOE V3.0 and RealityOS
-
MOE V3.0 and CultureOS
-
MOE V3.0 and FamilyOS
-
MOE V3.0 and WorkOS
-
Ministry of Education | MOE V3.0 and HealthOS
-
MOE V3.0 and FinanceOS
-
MOE V3.0 Final Three Pages — Publishing Pack
-
MOE V3.0 Control Tower Index
-
MOE V3.0 Main Hub Page
-
MOE V3.0 Public Claims Case Studies
-
MOE V3.0 PlanetOS Case Studies
-
MOE V3.0 Culture Case Studies
-
MOE V3.0 AI Case Studies
-
MOE V3.0 Platform Case Studies
-
MOE V3.0 Family Case Studies
-
MOE V3.0 Work Case Studies
-
MOE V3.0 Screen Case Studies
-
MOE V3.0 School Case Studies
-
MOE V3.0 and PlanetOS Receipts
-
MOE V3.0 and Adult Education
-
MOE V3.0 and Parent–Student–Teacher Tables
-
MOE V3.0 and AI / Platform Literacy
-
The Complete Route-Literacy Map for Hidden Rooms, Hidden Receipts, and Civilisation Common Sense
-
MOE V3.0 and Public Claims
-
MOE V3.0 and Culture Soup
-
MOE V3.0 and The Evil Route
-
MOE V3.0 and The Good Route
-
MOE V3.0 and the Cost Fork
-
MOE V3.0 and the Hidden Room
-
What Makes MOE V1.0, MOE V2.0, MOE V2.0 Extended, and MOE V3.0 Necessary? Part 2
-
What Makes MOE V1.0, MOE V2.0, MOE V2.0 Extended, and MOE V3.0 Necessary? Part 1
-
Ministry of Education V3.0 | The Civilisation Common Sense Control Tower
-
Ministry of Education V3.0 | Civilisation Common Sense and the Hidden Rooms of Modern Life
-
What is Wrong With Humanity | How to Fix What Is Wrong with Civilisation
-
Phase 4 Frontier Library | The Good and The Evil Archives
-
What Is Civilisation Repair? | The Phase 4 Frontier Runtime by eduKateSG
-
The Daily Purple Report | PlanetOS / Civilisation Latest Earth Planet News-Urgent Repair Edition | Dated 26 May 2026
-
How Strategy Works | The Portable Strategy Spine
-
How Strategy Works | Feedback
-
How Strategy Works | Execution
-
How Strategy Works | Legitimacy
-
How Strategy Works | Risk
-
How Strategy Works | Route
-
How Strategy Works | Asymmetry
-
How Strategy Works | Opposition
-
How Strategy Works | Movement
-
How Strategy Works | Timing
-
All-Seeing Eye Branch | The Missing Board and the Missing Timeline & Apex Cloud | The Time-Field Responsibility Cloud Timeline Audit
-
How Strategy Works | Strategy Control Tower Runtime
-
How Strategy Works | Repair and Adaptation
-
How SensorOS Works | No Sensor, No Map, No Flight
-
How Strategy Works | Apex Cloud Safety Appendix
-
How Strategy Works | Decision
-
How Strategy Works | Apex Character Capability Clouds: The Fenced Runtime
-
How Strategy Works | Constraint
-
How Strategy Works | Capability
-
How Strategy Works | Actor Map
-
How Strategy Works | The Current Board State
-
How Strategy Works | The Invariant Truth of Strategy
-
How Strategy Works | Future Pin
-
How Strategy Works | SWOT From Flat Table to Strategy Arena
-
How Culture Works | The Cultural Imperialism March
-
How Strategy Works | The Steps to a Strategy
-
How Strategy Works | The Big Runtime
-
How Strategy Works | The Hope
-
How Strategies Work | The Blindfold
-
How English Works | The Time Machine
-
How English Works | Different Modes of English
-
How English Works | Subject–Verb Order Upgraded
-
How English Works | Building English Like an Engineer
-
The Purple Report | Civilisation Urgent Repair Needed | The Urgency Board for 25 May 2026
-
The Daily Purple Report: PlanetOS Edition — 25 May 2026
-
The Daily Purple Report: PlanetOS Edition by eduKateSG
-
Learning English System: FENCE™ By EduKateSG Lesson 3 | Loaded Word “Society”
-
“There Is No Such Thing as Society” | A Technical Classification of Society, Culture, Responsibility, and the Lattice Problem
-
What Is Civilisation? | The Immutable Truth
-
All about Civilisation | Definition of Civilisation | Simple Meaning for Readers
-
eduKateSG Full Classification Stack v1.0
-
What Is Not a Society? | Explained Through the Classes of Society
-
What is Society? | A Simple Introduction and the Genesis Selfie of Society by eduKateSG
-
What is Culture? | Explained through the Genesis Selfie of Culture
Routing rule: use hubs for meaning; use this index for completeness. A deep page should remain discoverable without forcing the main menu to carry the entire library.
Return routes: use Learning Hubs for the normal subject-facing map, World & Knowledge for connected disciplines, Research & Inquiry when evidence and uncertainty are the issue, Civilisation for the longest system view, HELP when the next route is unclear, or the eduKate Ecosystem Hub when the correct federation owner is the question.