What exactly are we talking about?

Almost every confusion about AI comes from mixing up levels. Lexigraph places each term on its floor, from the model up to the organisation that puts it to work. Every entry answers in one sentence, then says what the term is not.

88 entries · 19 frontier pages · 4 paths · 15 practices · 15 roles · 6 infographics · 321 questions

Where to start

4 guided paths

01I’m starting outAI with no prerequisites. Every idea explained by one sentence and an everyday analogy.12 terms
02I buildFrom the model to the agent: the fine distinctions, the traps, the vocabulary of technical choices.20 terms
03I decide in committeeTalking AI in meetings, without confusing the model, the product and the project.15 terms
04I have to complyAI and the law: the AI Act, the GDPR applied to AI, personal data, sovereignty.10 terms

Would you rather try than read? The practices in In practice start from a situation in your week rather than from a term: ten minutes, the instruction shown word for word, with nothing to install.

Trying to place a job title instead? AI roles sorts each one by the object it answers for and by how close it stands to the machine, with what it actually delivers. No salaries: they hold from neither one country nor one city to the next.

The infographics

Interactive · printable · CC BY 4.0

Infographic 01 · Cross-cuttingThe ElevatorThe same request read at all four levels, four answers that prove the grid.Infographic 02 · Floor 2The HarnessOne model, four workstations: what turns a model into a product.Infographic 03 · Floor 1The WindowWhat the model has in front of it fits in a fixed volume. Beyond that, nothing exists.Infographic 04 · Floor 3The Anatomy of an AgentFive turns for one sentence: the goal does not move, everything else piles up.Infographic 05 · Floor 2Learn or Look UpWhere the knowledge lives, what an update costs, and what each need calls for.Infographic 06 · Floor 4The AI ActOne model, several uses: it is the use that decides the level of obligation.

Every infographic exists as an interactive version and as a poster to print. Free to reuse with attribution.

Often confused

19 frontier pages

An ordinary glossary defines terms. Lexigraph takes confusions apart: each pair answers in two sentences, compares point by point, then settles four concrete situations.

The quiz

Series of 12 questions built on the real confusions in the graph. Ten minutes, immediate marking, and a list of entries to reread on the way out. Never a score. 321 questions in total, all derived from the entries and the frontier pages.

Take a series