A different engineering question
Shannon’s paper treats the reproduction of a selected message at another point. Its introduction separates this engineering problem from the meaning of a particular message and discusses noise and the statistical structure of messages. The accessible Bell Labs record dates the publication to July 1948. The publisher DOI is retained below as a bibliographic reference; direct retrieval required a robot check during this source audit.
Place it beside the circuit work
The earlier switching-circuit work concerns the behavior and design of networks. Communication theory asks a different set of questions about messages and channels. Read the linked profile and circuit event to compare the two connections without treating them as the same theory.
Scope of this entry
This is a publication milestone, not a full explanation of entropy, coding or channel capacity. Those topics need their own worked examples and source review. The timeline uses year precision rather than assigning an exact date to the entire development of the theory.
Verification record
- Sources assessed by Codex (assistant)
- No executable example check recorded
- Independent human review pending
Selected claims have been assessed against the passages below. This record does not certify every sentence or guarantee correctness.
Inspect claims, evidence and limitations
Source assessment: . 2 of 2 selected claims marked supported by the assessor. This is not a coverage percentage for the article.
Bell Labs dates the publication to July 1948.
Assessor finding: supported · historical · Article passage
- Bell Labs, A Mathematical Theory of Communication — publication record and introduction — Publication heading: 01 July 1948
Passage read: Source passage read during this assessment. - Shannon (1948), Bell System Technical Journal 27(3), 379–423 — publisher record — DOI 10.1002/j.1538-7305.1948.tb01338.x
Access blocked: Direct DOI access redirected to a robot-check page; publisher metadata was not directly re-read.
The article now attributes the accessible publication date to Bell Labs and avoids pretending the blocked publisher page was read.
- Bell Labs, A Mathematical Theory of Communication — publication record and introduction — Publication heading: 01 July 1948
The introduction discusses selected messages, noise and the distinction from semantic meaning.
Assessor finding: supported · historical · Article passage
- Bell Labs, A Mathematical Theory of Communication — publication record and introduction — Introduction paragraphs following the date
Passage read: Source passage read during this assessment.
This entry summarizes the problem setting and does not validate the paper’s full mathematical results.
- Bell Labs, A Mathematical Theory of Communication — publication record and introduction — Introduction paragraphs following the date
Reproducible checks
These historical or editorial claims have no executable truth test. Source assessment and human review remain separate.
Limits and open work
- Bell Labs and the original publisher record refer to the same paper, not two independent discoveries.
- The publisher endpoint was blocked during direct access.
- Entropy, coding and capacity claims require separate technical treatment before expansion.
Independent human review
Pending. No independent human reviewer has signed off this version.
Content fingerprint: 954d2a19a9627a392cb4006c468123d9797ff0595f494dcde8ed171a5111e12e. An article change invalidates this assessment.
Sources
- Bell Labs, A Mathematical Theory of Communication — publication record and introduction
- Shannon (1948), Bell System Technical Journal 27(3), 379–423 — publisher record
Published by devutils · Updated · Original explanatory text; sources retain their own terms.