# Unsolved problems - recognised
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## https://en.wikipedia.org/wiki/Lists_of_unsolved_problems
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- not in psychology?
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- https://en.wikipedia.org/wiki/List_of_unsolved_problems_in_neuroscience
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## https://en.wikipedia.org/wiki/List_of_unsolved_problems_in_economics
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- https://phantran.net/what-we-do-not-know-10-unsolved-problems-in-finance/
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8. What Is the Value of Liquidity?
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- [Mr. Market’s Mind: Finance’s Hard Problem](https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3512043)
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# Parents
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* Revolutions of 21st century - T&M⏎