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Voluntarily contributing to a public good (such as Wikipedia) is a strong social norm. The tendency to follow such norms even if this is costly in the short run has developed over humans' evolutionary history, as in small to medium-sized hunter-gatherer communities this behavior was adaptive, e.g. due to reputation effects ("community enforcement")....


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I wouldn't underestimate the role of learning by answering. Drafting a significant text typically forces a person to put their thoughts in order, to engage in research, and then to structure the information for the purpose of recording and conveying it. It is not unusual that further insights or questions emerge during this process, the answerer certainly ...


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tl;dr: There could be multiple explanations depending on how you want to treat Wikipedia. If you want to treat Wikipedia as public good where everyone contributes a small part towards its creation and that everyone then enjoys equality you can explain it as people trying to still satisfy their own preferences through consuming the final Wikipedia page. You ...


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Look at the data For starters, the obvious thing is to look at the data about the self-reported reasons for contributing to wikipedia (and I'm surprised that neither the question asker nor most of the answers have done so). For example, Wikipedia itself has a section on the motivation that refers to multiple studies - though many of them are behind a paywall ...


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The most common one I have considered is health insurance as a private market. It becomes a case of the "market for lemons", where in this case the `lemons' are the people seeking insurance. https://personal.utdallas.edu/~nina.baranchuk/Fin7310/papers/Akerlof1970.pdf The simplified narrative goes something like this: Assumptions: Say insurance ...


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Am I correct to say that the app is non-excludable? I am sorry to say but this is wrong. Just assume google removes the application from the store. All android users would be excluded. There are many ways to exclude people from consuming an application. Access can be bound to a minimum age requirement, to a certain country (geo-blocking) or simply to a ...


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I had a look, and there's not a alot, and not much that is current. The problem is, the question (What is the impact of NASA on the economy?) is too big and too difficult to measure. I think you'll have better luck by focusing on particular angles to this question. For example, when referring to the impact of NASA, this could be anything from impacts on the ...


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