How Levels Work
Every topic on vox1.ai has a level from 1 to 6. A level shows how many people who work with a technology need that topic, not how hard it is. Level 1 is what almost everyone needs; level 6 is what almost nobody does.
That gives a skill tree an order that matches real work: learn what you'll use every day first, and leave the rare corners for when you need them.
Level 1 Conversational
The handful of core ideas and terms behind the subject. No hands-on use.
Who needs itAnyone who needs to follow a conversation about it — managers, recruiters, developers from other stacks.
Level 2 First steps
The minimum to set up, build and run something small.
Who needs itEveryone, in their first week of hands-on use.
Level 3 Everyday developer
Comfortable routine work — the common features, tools and patterns.
Who needs itSomeone who works with it daily, at least once a month.
Level 4 Practitioner
Production-grade use — advanced features, performance, testing, tooling and workflow setup.
Who needs itWhoever owns a production project, library or team setup built on it.
Level 5 Expert Deep dive
Internals and deep semantics — how it works under the hood, and its corner cases.
Who needs itWhoever has to explain how it works inside or debug its deepest behaviour.
Level 6 Rare Deep dive
The long tail — rarely used options, obscure, legacy, experimental or platform-specific details.
Who needs itAlmost nobody: 99.9% of users never meet it.
Core path and deep dive
Levels 1–4 are the core path: what a working developer needs. A tree shows these by default, and your completion percentage is measured against them. Each core level a tree has counts the same, so with four levels each one is worth 25%, however many topics it holds.
Levels 5 and 6 are an optional deep dive. They are folded in the tree until you open them, counted separately, and never part of the percentage. Finishing the core path reads as 100%.
Trees hold far more advanced topics than fundamentals, which is why progress is weighted by level and not by the number of topics.
How a topic gets its level
Each tree has its own written scale with example topics for every level, and every topic in the tree is rated against that scale. The question is always the same: who, among the people who use this technology, needs to know this?
Where to see them
Open any tree from the list of roadmaps. Levels are colour-coded in the tree, each lesson shows its level, and every tree has a page per level that lists all of that level's topics.