Information, Knowledge and Communication

Overview

This unit answers four linked questions. First, what is information, and how does it differ from the data it is built from and the knowledge it may become. Second, why does information matter so much in a modern society that entire economies, professions and governments are organised around it. Third, how does information move — through what channels, with what noise and distortion, and through what industries and institutions. Fourth, what rules govern that movement: who owns a work, who may copy or share it, who may demand information from a public authority, and what national programmes try to widen access.

Think of the unit as a funnel. It starts with abstract concepts, then widens to society, then to communication systems and markets, then to law and public policy. Keep returning to this funnel when later topics feel technical. A classification scheme is a way of arranging knowledge; a reference interview is a communication act; a consortium licence is an intellectual property arrangement; a digitisation project is an intervention in the life cycle.

Data, information, knowledge, wisdom; information life cycle

Data are recorded facts, figures, symbols or observations that have not yet been organised for a purpose. A list of temperatures, a set of circulation counts, or a string of catalogue numbers is data: it exists, it can be stored and transmitted, but on its own it answers no question. Information arises when data are processed, organised, contextualised and interpreted so that they become meaningful to a receiver. The same temperature readings become information when they are arranged by place and time, compared with seasonal norms, and presented to a farmer deciding when to sow. The transformation is therefore not in the symbols themselves but in structure, relevance and interpretation. Information reduces uncertainty for a particular person facing a particular decision, which is why the same message can be information for one reader and noise for another.

Knowledge goes further. It is information that has been internalised, connected with prior understanding, tested against experience, and made available for reasoning and action. A librarian who has answered many enquiries about a subject does not merely hold facts about it; the librarian holds organised understanding, knows which sources are trustworthy, recognises patterns in questions, and can judge a new source quickly. Knowledge may be explicit, recorded in documents, procedures and databases, or tacit, carried in skills, judgement and habit that are hard to write down. Wisdom is the most reflective level: the capacity to judge when knowledge should be used, when it should be withheld, what its longer consequences will be, and what values should guide the choice. Wisdom involves ethics, perspective and foresight, not merely more facts, and it cannot be automated by storing more data.

The information life cycle traces information from creation through communication, organisation, storage, retrieval, use and preservation, and often back to creation when use generates new information. An author creates a manuscript, a publisher or platform disseminates it, a library selects and acquires it, cataloguers and classifiers describe and arrange it, users discover and retrieve it, readers interpret and apply it, and the resulting new work or decision feeds the cycle again. At each stage value is added and risk is introduced: selection may exclude important voices, description may mislead, storage may fail, and formats may become obsolete. The cycle also explains why libraries invest in both collection and discovery. Good practice keeps creation, organisation, access and preservation in balance, and treats the user, not the document, as the point at which the cycle succeeds or fails.

Role of information and information science

Information plays a distinctive role in modern society because it is at once a resource, a product and an environment. As a resource it feeds research, education, industry, agriculture, health and administration: a doctor needs current treatment evidence, a farmer needs weather and market prices, a student needs textbooks and past learning, and a government needs statistics to plan services. As a product it is bought and sold in books, journals, databases, consultancy and data services, creating an economy in which value lies less in physical objects than in organised, trustworthy content and timely delivery. As an environment it surrounds citizens through media, public records, social platforms and everyday signage, shaping what people believe, how they vote, what they buy and how they understand their own communities. Societies that widen access to reliable information tend to widen participation, while societies where information is scarce, expensive or distorted concentrate power in fewer hands.

Information science is the discipline that studies this whole phenomenon: how information is created, represented, organised, stored, retrieved, communicated and used, and how systems and institutions can be designed to do each step better. It draws on librarianship, computer science, linguistics, psychology, management and communication studies, but its centre is the human being seeking understanding, not the machine alone. Its questions are practical as well as theoretical. How should a subject be represented so that a searcher finds it under the words they actually use. How should a system rank results so that relevance, authority and recency are balanced. How does information behaviour change with age, profession, language or disability. How can overload be reduced without hiding something important. Answers to such questions shape cataloguing rules, search interfaces, reference practice, collection policy and literacy teaching.

The field also carries a social responsibility. Information professionals are stewards of access: they defend the freedom to read and enquire, protect user privacy, resist censorship that is not grounded in law, and work against divides of language, income, geography and ability. This responsibility is not abstract. It appears in decisions about what to buy with a limited budget, which languages to collect, whether to require identification for a service, how long to keep borrowing records, and how to help a user who cannot read well or cannot afford a commercial database. Information science therefore combines technical skill with public purpose, and the best examination answers show both: the mechanism and the value it serves.

Communication, information industry and IPR

Communication is the process by which a source encodes a message, sends it through a channel, and a receiver decodes and interprets it, usually with feedback that confirms, corrects or extends understanding. Classic models describe this flow as source, message, channel, receiver and effect, with noise at every stage: physical noise that garbles a signal, semantic noise where words mean different things to sender and receiver, and psychological or cultural noise where attitudes, assumptions and prior knowledge filter the message. In library work the model is immediately practical. A reference interview is a communication act in which the stated question is rarely the whole need, the librarian must clarify through feedback, and the answer must be encoded in language the user can actually use. Formal channels, such as journals, books and conferences, carry information that has been reviewed, edited and recorded. Informal channels, such as conversation, correspondence, preprints and social media, carry it faster and more tentatively. Both matter, and a good service helps users move between them, checking an informal tip against a formal source before acting on it.

The information industry is the set of organisations that create, package, distribute and sell information and information services: authors and researchers, publishers, database producers, aggregators, booksellers, platform providers, libraries as intermediaries, and consultants and brokers who add value by searching, synthesising or customising. Its economics differ from manufacturing because the first copy is expensive while additional digital copies are cheap, because value depends heavily on timeliness and trust, and because markets are shaped by licences, subscriptions and bundles rather than outright ownership. Libraries sit inside this industry as both customers and providers: they buy licences, negotiate consortia deals, produce catalogues and repositories, and give free access that the market alone would not provide.

Intellectual property rights are the legal tools that balance the interests of creators, publishers and the public. Copyright protects original literary, artistic and other creative expression, giving the rights holder control over reproduction, distribution, adaptation and public communication, for a limited period, after which the work enters the public domain. It protects expression, not ideas or facts themselves, and it is subject to exceptions for purposes such as fair dealing in research, private study, criticism, review and teaching. Patents protect inventions that are new, inventive and industrially applicable, in exchange for public disclosure. Trademarks protect signs that distinguish goods and services, preventing confusion about origin. Trade secrets protect confidential business information that is kept secret and has commercial value. The underlying principle is balance: enough protection to reward creation, enough access to let knowledge grow.

RTI, IT Act and national initiatives

The right to information rests on a simple democratic idea: public authorities hold information on behalf of citizens, and citizens should be able to ask for it, receive it within a defined process, and use it to hold power to account. A right-to-information regime typically requires authorities to publish certain information proactively, to appoint officers to receive requests, to respond within a set time, to give reasons for any refusal, and to allow appeal to an independent commission when a request is refused or ignored. Exemptions protect matters such as national security, personal privacy, commercial confidence and information whose disclosure would harm an ongoing process, but exemptions are meant to be narrow and justified, not a general excuse for secrecy. Librarians who understand the regime can guide users without giving legal advice, point to the correct authority, and explain the difference between asking for a document and asking an authority to answer a general question or create new analysis.

Information technology law addresses the legal problems created by electronic communication and records: whether an electronic record and signature carry legal effect, how electronic contracts are formed, what duties fall on intermediaries that host or transmit content, how computer-related offences are defined, and how personal data and privacy are protected in digital systems. It matters to libraries because catalogues, repositories, licensed databases, email reference and learning platforms are all electronic systems that create records, store personal data, and transmit copyrighted material. A library that runs a website, keeps borrower data, offers remote access or digitises collections is therefore making legal choices, not only technical ones: what data to collect and for how long, how to secure it, what to log, what to disclose after a breach, and what terms to accept from a vendor.

National initiatives for information access aim to close gaps that markets and individual institutions cannot close alone. They typically include public library development and networking, digitisation of cultural and scholarly heritage, national repositories and open-access policies for publicly funded research, bibliographic and union catalogue infrastructure, community information services, digital literacy programmes, and connectivity for rural and underserved areas. Their common logic is that access is a system, not a single building or website: a digitised book helps only if users can find it, read it in their language, connect to it, and trust it. For examination answers, name the purpose and the mechanism of an initiative, then its limit: a portal without outreach, a repository without deposit mandates or curation, or a connectivity scheme without content and literacy will leave the underlying divide intact.

Data, information, knowledge and wisdom compared

Intellectual property rights compared