Nostalgia is such a weird idea. Parts of it are clearly tied to good memories of your own past, sure - it's the whole reason why people have comfort foods and hold onto familiar objects from their childhood like stuffed animals. Then there's a huge aspect of it that's not even tied to anything specific - even something similar to what we know can draw out that craved feeling of comfort. And, if you hit a sweet spot, you can get the same impression off something that's by all means outside of your own experience.













