Tools for thought are (mostly) public goods, and as a result are undersupplied:
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        - Aug 2021
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numinous.productions numinous.productions
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- Jun 2020
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theconversation.com theconversation.com- 
  Yasseri, T. (n.d.). Dominic Cummings: How the internet knows when you’ve updated your blog. The Conversation. Retrieved June 1, 2020, from http://theconversation.com/dominic-cummings-how-the-internet-knows-when-youve-updated-your-blog-139517 
 
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