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ELI5: Why would a butterfly be attracted to a human? I recently watched a video (link below) where a Monarch Butterfly (named Penelope) hung out with this guy for about a week. I would like to understand why a butterfly would do this.
ELI5: So I know that you can't eat/drink x hours before surgery to not aspirate your food, but what do they do when it's an unexpected surgery and the person just ate, like a car crash or burst appendix, etc?
ELI5: Why are more developed countires less religious (think Western Europe , Japan etc) whereas poorer countries tend to be more religious. If religion is equally "free" what explains this?