World-Building as Grand-Scale Speculation: Planetary, Cosmic and Conceptual Thought Experiments in Emmi Itäranta’s The Moonday Letters

Speculative fiction is commonly associated with highly involved artistic world-building. Indeed, speculation itself as an artistic practice often involves creation of detailed, grand-scale imaginary scenarios that come across as worlds the reader is invited to interpret as coherent systems. By analysing such grand-scale speculation in Emmi Itäranta’s The Moonday Letters (2020/2022), I demonstrate how such focus on modelling an imaginary world makes the novel a vehicle for various kinds of grand-scale thought experiments ranging from exploration of global ethics and meditations on cosmic order to conceptual reflection on speculative world-building itself as a manner of engaging with reality. This analysis offers a view to world-building in speculative fiction as a means for going beyond the everyday scale of human life, viewing the imaginary world as a heuristic model for interpreting our own reality.