Spectrums and Indexicality — Mariana Machado

Spectrums and Indexicality in the Abyssology of João Maria Gusmão and Pedro Paiva
2024
Communication Presented at New Sentient and Spectrums: A Conference on Sound and New Media Art at Escola das Artes - Universidade Católica Portuguesa

Abstract
This paper aims to build on the work of João Maria Gusmão and Pedro Paiva to develop the ideas of spectrums and indexicality. Rather than trying to interpret or develop their ideas in some way, we will use their work, with particular emphasis on an exhibition from 2008, as objects of theoretical experimentation to understand how certain perspectives are reflected in them. To do this, we will start with the concept of “spectrum” and some perspectives based on it, such as that of Jacques Derrida, and we will outline a possible reading of the exhibition. We will then reject this perspective and, through spirit photography, develop a use for the word “spectrum” from another point of view, focusing the main divergence on the definition of indexicality. Finally, through this new perspective, we will understand how it has consequences for the approach to all art and experience, namely through Nelson Goodman's concept of worldmaking.

Keywords
Spectrum; Indexicality; Worldmaking; João Maria Gusmão; Pedro Paiva