Language as the tip of the iceberg? Shedding a critical light on ‘hidden’ discourse in digital platforms

In digital scenarios, procedural instructions are instances of a kind of discourse that is pervasive yet littlevisible. These instructions define the information architectures of digital platforms themselves (van Dijcket al. 2019), construct the symmetries of relationships by determining hierarchies and dependenciesamong users and shape the context of digital communication. The pervasiveness of technical documen-tation, however, is inversely proportional to its accessibility, as this is generally hidden to the publicbehind the level of user interfaces. However, the impact that these instructions have on a wide rangeof discourse practices for end users (for example in terms of how apps are developed or how users’ dataare protected), make them worthy of investigation.By building on critical multimodal discourse analysis (van Leeuwen 2012, 2014; Machin 2013) andintegrating discourse analysis with elements of information theory (Moschini 2018), we will analyze aset of Facebook technical documentation about the login authentication service, comparing how this ser-vice was presented to app developers before and after the Cambridge Analytica scandal (Cadwalladr andGraham-Harrison 2018). We will show that, far from being a neutral authentication service, FacebookLogin indexes discourse practices that enact specific social roles. We will do so to shed a critical lighton the multidimensional micro-circulation of power (Foucault 1980) by means of texts analysis ofinstructional tools, by triangulating heuristics from linguistics, multimodality and information theory.