It was given to a Haskell audience, but not everyone knew Haskell, so I hope it's generally accessible. It describes how Oleg's work fits into the overall history of Haskell effect systems.
Wow, this is so cool that you did this and this showed up right now. There was an online book (soon to be published) by Xavier Leroy on the history of control mechanisms in programming languages with the last few chapters on Effect systems.
It was given to a Haskell audience, but not everyone knew Haskell, so I hope it's generally accessible. It describes how Oleg's work fits into the overall history of Haskell effect systems.