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  2. Quid pro quo - Wikipedia

    en.wikipedia.org/wiki/Quid_pro_quo

    Antichristus, a woodcut by Lucas Cranach the Elder of the pope using the temporal power to grant authority to a ruler contributing generously to the Catholic Church. Quid pro quo (Latin: "something for something") is a Latin phrase used in English to mean an exchange of goods or services, in which one transfer is contingent upon the other; "a favor for a favor".

  3. Language exchange - Wikipedia

    en.wikipedia.org/wiki/Language_exchange

    Language exchange is a method of language learning based on mutual language practicing by learning partners who are speakers of different languages. This is usually done by two native speakers teaching each other their native language. [1] Language exchange is different from other Language learning methods as there is usually no set syllabus or ...

  4. Communication - Wikipedia

    en.wikipedia.org/wiki/Communication

    The development of the internet constitutes a further milestone in the history of communication. It made it easier than ever before for people to exchange ideas, collaborate, and access information from anywhere in the world by using a variety of means, such as websites, e-mail, social media, and video conferences. See also

  5. Tandem language learning - Wikipedia

    en.wikipedia.org/wiki/Tandem_language_learning

    Tandem language learning is an approach to language acquisition that involves reciprocal language exchange between tandem partners. In this method, each learner ideally serves as a native speaker of the language the other person intends to learn. Tandem language learning deviates from traditional pedagogical practices by eliminating the teacher ...

  6. Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/Main_Page

    Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects : Commons. Free media repository. MediaWiki. Wiki software development.

  7. Value (economics) - Wikipedia

    en.wikipedia.org/wiki/Value_(economics)

    e. In economics, economic value is a measure of the benefit provided by a good or service to an economic agent, and value for money represents an assessment of whether financial or other resources are being used effectively in order to secure such benefit. Economic value is generally measured through units of currency, and the interpretation is ...

  8. Blockchain - Wikipedia

    en.wikipedia.org/wiki/Blockchain

    A blockchain has been described as a value-exchange protocol. A blockchain can maintain title rights because, when properly set up to detail the exchange agreement, it provides a record that compels offer and acceptance. [citation needed] Logically, a blockchain can be seen as consisting of several layers: infrastructure (hardware)

  9. Sender Policy Framework - Wikipedia

    en.wikipedia.org/wiki/Sender_Policy_Framework

    Sender Policy Framework ( SPF) is an email authentication method which ensures the sending mail server is authorized to originate mail from the email sender's domain. [1] [2] This authentication only applies to the email sender listed in the "envelope from" field during the initial SMTP connection. If the email is bounced, a message is sent to ...