# Hidden Time/Randomness/Global State

> Reading the clock, randomness, or global state inside a computation, making its output nondeterministic.

Record: `lexicon:hidden-time-randomness-global-state`
Kind: anti-pattern
Layer: [Computation Core](https://banes-lab.com/records/layer/computation-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-hidden-time-randomness-global-state

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Hidden IO](https://banes-lab.com/records/lexicon/hidden-io.md) and before [Implementation-Only Testing](https://banes-lab.com/records/lexicon/implementation-only-testing.md).

## Category

- [Correctness / Determinism / Verification](https://banes-lab.com/records/lexicon-category/correctness-determinism-verification.md)

## Negated by

- [Determinism](https://banes-lab.com/records/architecture/determinism.md)

## Linked from

- [Correctness / Determinism / Verification](https://banes-lab.com/ontology/principles/architecture-category-correctness-determinism-verification.md)