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  2. List of used book conditions - Wikipedia

    en.wikipedia.org/wiki/List_of_used_book_conditions

    This is the equivalent of mint condition in numismatics. Fine (F or FN) is "as new" but allowing for the normal effects of time on an unused book that has been protected. A fine book shows no damage. Very good (VG) describes a book that is worn but untorn. For many collectors this is the minimum acceptable condition for all but the rarest items.

  3. Absolute Category Rating - Wikipedia

    en.wikipedia.org/wiki/Absolute_Category_Rating

    Absolute Category Rating (ACR) is a test method used in quality tests. [1] [2] The levels of the scale are, sorted by quality in decreasing order: Excellent; Good; Fair; Poor; Bad; In this method, a single test condition (generally an image or a video sequence) is presented to the viewers once only. They should then give a quality rating on an ...

  4. Mint condition - Wikipedia

    en.wikipedia.org/wiki/Mint_condition

    Mint condition is an expression used to denote the quality of a pre-owned good as displaying virtually no imperfections and being in pristine condition relative to its original production state. Originally, the phrase related to the way collectors described the condition of coins .

  5. Used good - Wikipedia

    en.wikipedia.org/wiki/Used_good

    A garage sale is a common place to find cheap used goods for sale. A person reading a book, in a second-hand shop.. Used goods, also known as secondhand goods, are any item of personal property that have been previously owned by someone else and are offered for sale not as new, [1] including metals in any form except coins that are legal tender.

  6. If and only if - Wikipedia

    en.wikipedia.org/wiki/If_and_only_if

    Wherever logic is applied, especially in mathematical discussions, it has the same meaning as above: it is an abbreviation for if and only if, indicating that one statement is both necessary and sufficient for the other. This is an example of mathematical jargon (although, as noted above, if is more often used than iff in statements of definition).

  7. Extraordinary assumptions and hypothetical conditions

    en.wikipedia.org/wiki/Extraordinary_assumptions...

    The distinction between the two lies in the potential veracity of the assumption. A hypothetical condition assumes a condition which is known to be contrary to fact whereas an extraordinary assumption assumes a condition or a fact which is merely unknown or uncertain. The results of an analysis involving any hypothetical conditions are known to ...

  8. As is - Wikipedia

    en.wikipedia.org/wiki/As_is

    As is" is a phrase used to indicate the existing condition of something without any modifications or improvements. [1] The term is employed in legal, business, and consumer settings to establish that an item or property is being sold or provided in its current condition, [2] [3] with no warranties or guarantees regarding its quality. [4] [5]

  9. Refurbishment (electronics) - Wikipedia

    en.wikipedia.org/wiki/Refurbishment_(electronics)

    In many countries, the word "refurbished" is not legally protected (although France has introduced a legal definition as of 2022). [1] This means that different electronics resellers will have different definitions of what counts as a refurbished device. In theory, a smartphone could be sold as 'refurbished' with no repairs or testing whatsoever.