Ontology
How the position relates to models from physics about the nature of reality or difficulties driven by connecting the position to the reality of physical implementation give our best understanding of physics.
Supporting Arguments (4)
Church Turing Thesis
Most natural processes are computable, so it's likely consciousness is too.
Natural Selection Argument
Evolution would not select for consciousness if it didn't have a useful function.
Ontic Structural Realism
If reality is fundamentally just a set of relationships, then consciousness is also defined by its relational (and thus functional) structure.
Informational Ontologies
If reality is fundamentally made of information, then consciousness is a form of (substrate independent) information processing.
Challenging Arguments (3)
Lightcone Reification Problem
If the last step of an algorithm cannot know the full history of its inputs, those inputs cannot causally affect the current moment.
Possibility of Analogue Computation
Consciousness might depend on continuous (analogue) processes, not discrete (digital) ones.
Neural Replay
It is plausible the brain operates based on what does happen rather than what could have happened, unlike computation which is typically defined via counterfactuals