Probably a re-post but I really enjoyed this paper:
World Age in Julia
Optimizing Method Dispatch in the Presence of Eval (Extended Version)
JULIA BELYAKOVA,Northeastern University, USA
BENJAMIN CHUNG,Northeastern University, USA
JACK GELINAS,Northeastern University, USA
JAMESON NASH,Julia Computing, USA
ROSS TATE,Cornell University, USA
JAN VITEK,Northeastern University / Czech Technical University, USA / Czech Republic