# Stateful IO

> The degree to which stateful input/output conflicts with expressions being replaceable by their values.

Record: `lexicon:stateful-io`
Kind: quality-attribute
Layer: [Computation Core](https://banes-lab.com/records/layer/computation-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-stateful-io

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Spec Maintenance](https://banes-lab.com/records/lexicon/spec-maintenance.md) and before [Stateful Operations](https://banes-lab.com/records/lexicon/stateful-operations.md).

## Category

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

## In tension with

- [Referential Transparency](https://banes-lab.com/records/architecture/referential-transparency.md)
- [Referential Transparency / Stateful IO](https://banes-lab.com/records/tension/referential-transparency-stateful-io.md)

## Linked from

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