Explore a hidden actor framework within the Glasgow Haskell Compiler's runtime system in this 26-minute conference talk from Haskell 2023. Discover how lightweight threads and asynchronous exceptions can be combined to create a powerful actor system, demonstrated through a classic distributed systems example. Learn about extending the framework to handle dynamic types and consider the implications of intersecting runtime features. Examine how constraining certain features could potentially guide better programming practices in Haskell.