-Nostalgia is a bittersweet longing for the past, often for a time or place idealized in memory. It is a complex [Emotion](/wiki/emotion) that can evoke both joy and [Sadness](/wiki/sadness), connecting us to our personal history.
-## See also
-- [Memory](/wiki/memory)
-- [Time](/wiki/time)
-- [Melancholy](/wiki/melancholy)
+
+this dude at the top waiting until somebody will add bird at the top.
+**Nostalgia** is [sentimental](https://en.wikipedia.org/wiki/Sentimentality) longing for the past, typically for a period or place with happy personal associations.[\[2\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-boym-2) The word *nostalgia* is a [neoclassical compound](https://en.wikipedia.org/wiki/Neoclassical_compound) derived from [Greek](https://en.wikipedia.org/wiki/Greek_language), consisting of [νόστος](https://en.wikipedia.org/wiki/Nostos) (*nóstos*), a [Homeric](https://en.wikipedia.org/wiki/Homer) word meaning "homecoming", and ἄλγος (*álgos*), meaning "pain"; the word was coined by a 17th-century medical student to describe the anxieties displayed by [Swiss mercenaries](https://en.wikipedia.org/wiki/Swiss_mercenaries) fighting away from home.[\[3\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-3) Described as a medical condition—a form of [melancholy](https://en.wikipedia.org/wiki/Depression_\(mood\))—in the [early modern period](https://en.wikipedia.org/wiki/Early_modern_period),[\[4\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-NYMag20160225-4) it became an important [trope](https://en.wikipedia.org/wiki/Trope_\(literature\)) in [Romanticism](https://en.wikipedia.org/wiki/Romanticism).[\[2\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-boym-2)
+Nostalgia is associated with a longing for the past, its personalities, possibilities, and events, especially the "[good old days](https://en.wikipedia.org/wiki/Good_old_days)" or a "warm childhood".[\[5\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-5) There is a predisposition, caused by [cognitive biases](https://en.wikipedia.org/wiki/Cognitive_bias) such as [rosy retrospection](https://en.wikipedia.org/wiki/Rosy_retrospection), for people to view the past more positively and the future more negatively.[\[6\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-6)[\[7\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-The_Guardian-7)[\[8\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-8) When applied to one's beliefs about a [society](https://en.wikipedia.org/wiki/Society) or [institution](https://en.wikipedia.org/wiki/Institution), this is called [declinism](https://en.wikipedia.org/wiki/Declinism), which has been described as "a trick of the mind" and as "an emotional strategy, something comforting to snuggle up to when the present day seems intolerably bleak".[\[9\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-The_Telegraph-9)
+The scientific literature on nostalgia usually refers to nostalgia regarding one's personal life and has mainly studied the effects of nostalgia as induced during these studies. [Emotion](https://en.wikipedia.org/wiki/Emotion) is a strong provoker of nostalgia due to the processing of these [stimuli](https://en.wikipedia.org/wiki/Stimulus_\(psychology\)) first passing through the [amygdala](https://en.wikipedia.org/wiki/Amygdala), the [emotional](https://en.wikipedia.org/wiki/Emotional) seat of the [brain](https://en.wikipedia.org/wiki/Brain). These recollections of one's past are usually important events, people one cares about, and places where one has spent time. Cultural phenomena such as [music](https://en.wikipedia.org/wiki/Music),[\[10\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-psychologytoday.com-10) [movies](https://en.wikipedia.org/wiki/Film), [television shows](https://en.wikipedia.org/wiki/Television_show),[\[11\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-nelakonda-11) and [video games](https://en.wikipedia.org/wiki/Video_game),[\[12\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-mccarthy-12) as well as natural phenomena such as [weather](https://en.wikipedia.org/wiki/Weather) and environment[\[13\]](https://en.wikipedia.org/wiki/Nostalgia#cite_note-weather-13) can also be strong triggers of nostalgia.
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