Theory

How IIT’s quantities map onto PyPhi’s types and functions, grounded in a single worked example. For a broad orientation to the theory itself, see also the IIT wiki; the authoritative sources are Albantakis et al. (2023) and Mayner, Marshall & Tononi (2026).

• What IIT computes
• Substrate and system
• Conditional independence
• System integrated information
• The intrinsic-information requirement
• Distinctions and relations
• The Φ-structure
• Macro units and grains
• Computational complexity