Scott Alexander explores different types of prediction markets, their uses, limitations, and ethical considerations in decision-making and information gathering. Longer summary

Scott Alexander discusses various types of prediction markets, including information markets, decision markets, attention markets, and action markets. He explores their potential uses, limitations, and ethical considerations. The post covers how these markets can be used to predict past and present events, guide decision-making, allocate attention to important issues, and incentivize actions. Scott also discusses the challenges and potential pitfalls of each type of market, such as trust issues, the need for resolution, and potential for abuse. He concludes by drawing parallels between prediction markets and concepts in AI safety and neuroscience. Shorter summary

Scott Alexander presents a satirical list of fictional cryptocurrencies and the humorous reasons for their ban by the SEC. Longer summary

Scott Alexander humorously describes a list of fictional cryptocurrencies banned by the SEC, each with unique and often absurd features. He explains the concept behind each cryptocurrency, ranging from religious-themed coins to those based on communist ideals or vampire slaying. The post then provides comical reasons for why each cryptocurrency was banned, often highlighting potential societal issues or unintended consequences of their implementation. Shorter summary