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  2. Wikipedia:Wikipedia Signpost/2021-12-28/Crossword - Wikipedia

    en.wikipedia.org/.../2021-12-28/Crossword

    Last month, the Signpost hosted a crossword, which can be found here. The answers to last month's crossword can be found at the following link – thank you all for playing! We have a new crossword for this month – once more, all of the answers have something to do with Wikipedia, though the clues may seem unrelated.

  3. Wikipedia:Wikipedia Signpost/2022-01-30/Crossword - Wikipedia

    en.wikipedia.org/.../2022-01-30/Crossword

    You've read 25 crossword clues already. Please consider renewing your Signpost subscription today (or signing up for a free account) to help protect fearless, independent journalism in a world where unbiased reporting is more important than ever; democracy dies in darkness.

  4. Crossword - Wikipedia

    en.wikipedia.org/wiki/Crossword

    Crossword-like puzzles, for example Double Diamond Puzzles, appeared in the magazine St. Nicholas, published since 1873. [32] Another crossword puzzle appeared on September 14, 1890, in the Italian magazine Il Secolo Illustrato della Domenica. It was designed by Giuseppe Airoldi and titled "Per passare il tempo" ("To pass the time"). Airoldi's ...

  5. Crossword abbreviations - Wikipedia

    en.wikipedia.org/wiki/Crossword_abbreviations

    Cryptic crosswords often use abbreviations to clue individual letters or short fragments of the overall solution. These include: Any conventional abbreviations found in a standard dictionary, such as:

  6. Cooperation - Wikipedia

    en.wikipedia.org/wiki/Cooperation

    Cooperation is common in non-human animals. Besides cooperation with an immediate benefit for both actors, this behavior appears to occur mostly between relatives. Spending time and resources assisting a related individual may reduce an organism's chances of survival, but because relatives share genes, may increase the likelihood that the ...

  7. Category:Crossword competitions - Wikipedia

    en.wikipedia.org/wiki/Category:Crossword...

    Pages in category "Crossword competitions" The following 3 pages are in this category, out of 3 total. ... This page was last edited on 21 December 2024, ...

  8. Reciprocal altruism in humans - Wikipedia

    en.wikipedia.org/wiki/Reciprocal_altruism_in_humans

    In addition, cooperation is the most deep-seated foundation for the formation and existence of human society. Therefore, the proposition of reciprocal altruism is undoubtedly a great theoretical advance in human cognition history. Human reciprocal altruism seems to be a huge magnetic field to interweave different disciplines closely.

  9. Prisoner's dilemma - Wikipedia

    en.wikipedia.org/wiki/Prisoner's_dilemma

    In addition to the general form above, the iterative version also requires that ⁠ > + ⁠, to prevent alternating cooperation and defection giving a greater reward than mutual cooperation. The iterated prisoner's dilemma is fundamental to some theories of human cooperation and trust.