We have an association of light=good and dark=bad, to the point where we even use them as synonyms. There are a lot of pretty obvious historical bases for these metaphors:
- Sunlight is the ultimate source of energy (and by extension, food and warmth) on Earth
- Humans have poor low-light vision, and are vulnerable at night
- Things generally get darker when they get dirtier, etc.
Is this a human universal?
Are there cultures/mythologies that flip it around?