Jev glossary
Core ConceptsSmart if-statement
Smart if statement
TypeSafe's shorthand for what a System One decision is: a condition your code can branch on directly, backed by a model judgment.
- Category
- Core Concepts
- Also known as
- Smart if-statement
- Reading time
- 1 min
- Related terms
- 4
- Directory entries
- 2
- Docs
- typesafe.ai
- Added
- 2026-09-24
Definition
The manifesto uses the phrase for the practical shape of a System One call: a thresholded Noul or a Choice value inside an if, no parsing and no agent loop. It is the smallest unit of AI-powered software.
The idea only holds when the answer is typed and the uncertainty is visible, which is why answers carry probabilities and confidence alongside the selected option.
Tagsarchitecturemanifesto
Related terms
Definitions that connect to this one.
Neuro-symbolic AIThe manifesto's framing of TypeSafe's aim: neural networks for perception paired with symbolic logic, or smart if-statements.Core ConceptsTyped decisionA model output that conforms to a software type your code expects, rather than free-form text that has to be parsed.Core ConceptsNoulThe yes/no primitive: one probability from 0 to 1, where the value is the answer and no separate confidence is returned.PrimitivesConfidence gateA threshold on confidence that decides whether code acts, confirms first, or escalates to a person or a bigger model.Answers & Confidence
From the Jev directory
Directory entries that go deeper on this term.
TypeSafe's case for machine-native composable AI: intelligence as a dependable primitive that software branches on, rather than an assistant that keeps humans in the loop.
Jev Guides & ArticlesArticle#official#article#architecture
Official
The idea behind Jev: models that return typed decisions and probabilities instead of generated text, named after Kahneman's fast-thinking System 1, with confidence to route around uncertainty.
Jev Guides & ArticlesDocs#official#docs#architecture
Official
From the Jev AI model community
Posts from builders shipping with Jev right now.