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.
-
How to Study G2 Bengali | SEC Syllabus K239
-
How to Study G2 Principles of Accounts | SEC Syllabus K233
-
How to Study G2 Design and Technology | SEC Syllabus K234
-
Why English? | Writing a Research Privileged-Access Corrective-Effectiveness Sustainment Plan
-
How to Study G2 Art | SEC Syllabus K236
-
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
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.
-
Kernel Loader Registry — How to Execute Education OS (Canonical)
-
Education OS — Canonical Definition and Public Standard
-
Canonical Education OS Run 014 – Institutional Corruption and Extraction Loop Collapse
-
Canonical Education OS Run 013 – Information System Collapse (Truth Integrity Breakdown)
-
Canonical Education OS Run 012 – National Education System Credentialisation Collapse
-
Canonical Education OS Run 010 – Inflation Shock and Social Cohesion Breakdown
-
Canonical Education OS Run 009 – AI Deployment Failure (Organization Becomes Faster but Dumber)
-
Canonical Education OS Run 008 – Civilization Decline Signature (Human-Building Pipeline Breakdown)
-
Canonical Education OS Run 007 – AI and Civilization Co-Evolution Health Diagnostic
-
Canonical Education OS Run 006 – Global Civilization Health Diagnostic
-
Canonical Education OS Run 005B – Wartime Government Mobilisation Failure
-
Canonical Education OS Run 005 – Government Capability Decline and Public Trust Breakdown
-
Canonical Education OS Run 004 – Adult Career Transition Stall
-
Canonical Education OS Run 003 – Classwide Reading Comprehension Plateau
-
Canonical Education OS Run 002 – Small Team Underperforming
-
Prompt Loader Page
-
Canonical Example Page (Gold Standard)
-
Canonical Kernel Page
-
Canonical Kernel Loader — DLT Capability Engine
-
Education OS & EduKate OS — Official Questions & Answers
-
Education OS Starter Kit
-
MCL Runtime Execution — Company Collapse (Fear Loop + Extraction Loop)
-
MCL Runtime Execution — Modern Education Stall (Truth, Incentives, Capability Pipeline)
-
MCL Runtime Execution — WW2 Germany (Decision Integrity and Feedback Failure)
-
Education OS Safety Charter
-
Implement Education OS
-
Case Archive
-
Education OS Certification
-
Education OS v1.0
-
Collapse Signatures
-
Canonical Kernel Loader — MCL (Meta-Control Layer)
-
Canonical Kernel Loader — OHME-e/t (Human Outcome Physics)
-
OHME-e/t Tools
-
Environment Constraints
-
Solving the Decline of Education
-
Education OS — D/L/T Diagnostic Specification (Plain Text)
-
Education OS — Load Repair Loop Specification
-
Education OS — Transfer Repair Loop Specification
-
Education OS — Lifelong Learning Engine S-Curve Mapper Prompt Pack
-
Education OS — D/L/T Probe Bank by Subject
-
Education OS — D/L/T Probe Set
-
Education OS — Depth Repair Loop Specification
-
eduKate Mathematics Learning System: The Complete Primary 1 to Secondary 4 Map (PSLE Math, Secondary E-Math, Additional Mathematics)
-
Additional Mathematics Learning Spine | Sec 1 Foundations → Sec 3 A-Math → Sec 4 SEC
-
eduKate Vocabulary Learning Spine: Start Here (Primary → PSLE → Secondary, What to Read Next)
-
How this Vocabulary Learning System fits into eduKate’s Approach to Learning (the big picture)
-
Punggol Primary 6 Science Tuition | From Evidence to Explanation for PSLE
-
How Education Works | Formative Assessment — How Evidence Changes the Next Teaching Move
-
How Education Works | Summative Assessment — How Schools Make Defensible Judgments About Learning
-
Client Portal
-
Why is transition important for Secondary English Composition
-
What is syntax for the editing section of MOE SEAB GCE O levels English Syllabus
-
Secondary Mathematics Tuition | Bukit Panjang — 3 Pax Small Groups
-
Punggol Mathematics Tuition | From Representation to Method Selection and Transfer
-
Primary 6 Mathematics Tuition | Punggol
-
Primary 5 Mathematics Tuition | Punggol
-
How Education Works | Prior Knowledge — How What Students Already Know Shapes New Learning
-
How Education Works | Cognitive Load — How Working Memory, Knowledge and Task Design Shape Learning
-
How Education Works | Learning Environment — How Space, Tools and Conditions Shape Student Attention and Action
-
Tampines Tuition Guide for Parents | eduKateSG
-
Should Tuition Continue, Change, Reduce or Stop? A Parent Evidence Guide
-
How Education Works | Curiosity — How Questions, Knowledge Gaps and Discovery Drive Learning
-
How to Read War Predictions 2026–2027 | Probability, Confidence, Risk and War Forecast Percentages Explained
-
How Education Works | Misconceptions — How Wrong Models Form, Persist and Change
-
How Education Works | Student Choice — How Autonomy Works Without Removing Structure
-
War Escalation Signals Explained | Warning Signs of War, Triggers, Restraint and False Alarms
-
How War Affects Everyday Life | Energy, Food, Shipping, Cyber, Education and Singapore
-
How Education Works | Productive Struggle — How Difficulty Becomes Learning Instead of Frustration
-
How Education Works | Academic Confidence — How Evidence of Capability Builds Self-Efficacy
-
How Education Works | Help-Seeking — How Students Ask for Help Without Giving Away the Learning
-
Latest News
-
How Education Works | Reflection — How Students Turn Experience Into Better Decisions
-
How Education Works | Peer Feedback — How Students Help Each Other Improve Without Taking Over the Work
-
How to Use eduKateSG | Parent & Student Guide
-
General & Website Enquiries | eduKateSG
-
P1 to P6 Mathematics Foundations Before PSLE | eduKateSG
-
How to Use the PSLE Mathematics Syllabus for Study Planning
-
PSLE Mathematics Syllabus: 2015 Historical Record & 2026 Crosswalk
-
PSLE English Syllabus: 2015 Historical Record & Current Crosswalk
-
PSLE Science Syllabus: 2015 Historical Record & 2026 Crosswalk
-
Tuition Centre, Tutor or Tutorial? A Singapore Parent Guide | eduKateSG
-
From Tuition to Independent Learning | eduKateSG
-
eduKate Singapore Education Philosophy & Values
-
Protected: Mathematics Practice & Exam Paper Archive | eduKateSG
-
Choosing Tuition in Singapore | A Parent Guide by eduKateSG
-
How eduKateSG Small-Group Tuition Works | 3-Student Tutorials
-
War Predictions 2026–2027: A 12-Month Global Conflict Risk Forecast | The Purple Report
-
How Perturbation Theory Works | From Small Parameters and Asymptotic Expansions to Boundary Layers, Multiple Scales and Reliable Approximation
-
The G|S|S|N|R Anticipation Loop | How Systems See the Next Edge Before It Becomes the Next Cliff
-
The G|S|S|N|R Decision Window | How Systems Know When to Wait, Prepare or Commit
-
The G|S|S|N|R Commitment Ladder | How Systems Scale Action From Probe to Irreversible Decision
-
How the Singapore Middle Class Is Changing | The Professional Job Is No Longer the Final Destination
-
Why Primary Mathematics Improvement Is Often a Timing Problem, Not an Intelligence Problem
-
The Primary Mathematics Habit Loop: Practice, Feedback, Repair, Repeat
-
Why Students Struggle in IGCSE Mathematics
-
How to Prepare for a G1, G2 and G3 Parent-Teacher Meeting in Singapore | Full SBB Questions, Evidence and Decisions
-
G1, G2 and G3 Myths and Misconceptions in Singapore | Full SBB Facts, Parent Questions and What the Labels Really Mean
-
How Secondary 1 Works After PSLE in Singapore | G1, G2, G3, Full SBB, First-Year Transition and Parent Guide
-
How Education Works | Learning Progressions — How Knowledge Builds From First Encounter to Independent Transfer
-
How Education Works | Learning From Mistakes — How Error Becomes Diagnosis, Repair and Better Judgment
Learning Projects / Portfolio
Project-layer learning systems, prototypes, specialist routes and experimental knowledge architecture.
-
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
-
How Important Is Teamwork?
-
How Culture Works | Civilisation OS Apps
-
How Culture Works | I Am an Alien in Your World | Developed by eduKateSG
-
How Culture Works | “I Don’t Understand You” Sentence
-
The Pegasus Teamwork System by eduKateSG
-
How Teamwork Works | The Pegasus
-
How Teamwork Works | The Trojan Horse Problem
-
How Teamwork Works | The Versioning Problem
-
How Teamwork Works | The “I Don’t Understand You” Sentence
-
How English Works | Loading a Trojan into a Sentence
-
How English Works | Versioning
-
How English Works | It Is a Video Recorder in Words
-
How English Works | “I Don’t Understand You”
-
Learning English System: FENCE™ By EduKateSG Lesson 2 | Loaded Sentence “I Don’t Understand You”
-
What Is Culture? | The Recording Mind Map and Shell Contact Model by eduKateSG
-
What Is War? | The Shell System Model by eduKateSG
-
What Is Teamwork?
-
How Teamwork Works | Engineering the Ultimate Team Build
-
How Teamwork Works | The Ultimate Team
-
How Culture Works | The Algorithm
-
How Teamwork Works | Team Building
-
How Teamwork Works | Optimizing The Team
-
How Culture Works | When Many Cultures Meet and Shake Hands
-
How Culture Works | Microculture to Mesoculture to Macroculture
-
What Ends Wars | The Conclusion
-
What is a Ministry of Education? | The Big Picture
-
How News Works | The Algorithm
-
Why Wars Start | The Opening
-
How Teamwork Works | Impossibility and the Time Compression Machine
-
How Teamwork Fails | When even Superhero Teamwork can Collapse
-
How Teamwork Works | Normal People Making Superhero Moves
-
How Teamwork Works | Bletchley Park Case Study
-
How Teamwork Works | Manhattan Project Case Study
-
How Teamwork Works | How eduKateSG’s Teamwork Shell System Completes a Project
-
How Teamwork Works | The Big Picture
-
How English Works | The Future Remembers The Past
-
Who Is The Good in eduKateSG’s Civilisation OS?
-
Why eduKateSG Requires WarOS
-
The Daily Purple Report | Latest Civilisation Report Update Dated 22nd May 2026
-
How Learning Works | The Learner
-
How News Works | The Front-page
-
How Culture Works | The Trendsetters
-
How Teamwork Works | The Active and Reactive Team
-
How Education Works | The Active and Reactive Student
-
How Wars Works | Theory of Strategic Relativity developed by eduKateSG
-
Theory of Strategic Relativity developed by eduKateSG | Why Strategic Relativity Is Different
-
How Wars Work | The Strategist, The General, and The Skies
-
The School of Adulthood
-
How Culture Works | The Art of the Mind | School of Adulthood
-
How Culture Works | The Festival Engine of Society
-
How Culture Works | What Happens When Culture Meets Society
-
How Culture Works | The Obvious Machine We Missed
-
How Culture Works | The Money
-
How Culture Works | Teamwork
-
Civilisation as History | Why History Is Not a Clean Mirror
-
Civilisation as History | The Importance of Understanding Corridor of Possible Shell Extraction Theory
-
Civilisation | Corridor of Possible Shell Extraction Theory by eduKateSG
-
How Mind Works | The Ethical, The Good, and The Courageous | The School of Adulthood
-
CivOS | How Civilisation Loop Operating System Works
-
How Society Works | The Members
-
Society | The Responsibility
-
How Civilisation Works | The History
-
Civilisation | The Infrastructure
-
Civilisation | The Layers
-
Civilisation | The Invisible Spider Web
-
How Civilisation Works | His Uncle Is My Uncle Is Your Uncle
-
Civilisation | The Big Picture
-
How Culture Works | The Role of Culture in All Zoom Levels
-
How Culture Works | Classifying Culture Groups and Subgroups
-
How Culture Works | Growing a Culture
-
How Culture Works | The Levels of Culture
-
How Culture Works | The Stages of Culture
-
How Culture Works | The Role of Culture
-
How Culture Works | The Reason Culture Exists in Reality
-
How Culture Works | Step-by-Step Creation of a New Culture
-
How Civilisation Works | The Big Picture
-
How Culture Works | Evolution or Revolution
-
How Culture Works | The Full CultureOS Picture
-
How Culture Works | Mental Decompression
-
How Tutoring Works | The Full Picture
-
Tutor Classification Model by eduKateSG
-
How Tuition Works | The Tutorial Class Control Tower | Tutor Skill Class and Micro/Meso/Macro Tutors Classification by eduKateSG
-
The Daily Purple Report | Latest News Today Dated 18 May 2026
-
The Ultimate Science Tutor
-
The Ultimate Additional Mathematics Tutor | The Algebraic Engine
-
How Mathematics Tuition Works | The Ultimate Mathematics Tutor
-
The Ultimate English Tutor | How English Tuition Works
-
The Ultimate Tutor | The Tutor Who Sees the Whole Table
-
How Culture Collapses | The Inside Break
-
How Culture Works | Collapse Mode of Culture
-
How Secondary 3 Additional Mathematics Tuition Works | The Watch
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.
