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Appendix

Taxonomy of Replica Types

The full inventory of bodies that produce your ixperiencitness, sorted by time relation, material, completeness, and causal continuity.

Replica Taxonomy TAXONOMY OF REPLICAS Identical Replicas Bodies whose structure produces the same ixperiencitness as the original Identireplica a body identical in structure to you Cidentireplica continuing Videntireplica diverging Fidentireplica fragmented Enhaidentireplica enhanced Isoidentireplica iso-material Simidentireplica simulated Insidentireplica instantaneous DISTINGUISHED BY: Time relation same instant · continuing · discontinuous Material same matter · different matter · simulated medium Completeness full original · fragment · enhanced extension Causal continuity derived from original · independent reproduction All produce the same ixperiencitness as the original.
The full taxonomy of identical replica types

"Another version of you" is not a single concept. There are many different ways another body can relate to your consciousness, and the differences matter. The following are the most important replica types defined by Ixperiencit Theory.

Identical Replica (Identireplica): An exact replica of you at a moment in time. Same structure, same functioning, same ixperiencitness. This is the purest case, the thought experiment that establishes the core principle.

Continuing Replica (Cidentireplica): An exact replica that continues to match you over time, an ongoing parallel version, not a mere snapshot. This is harder to achieve in practice (different environments would cause divergence), but it represents the theoretical ideal of perfect reproduction.

Diverging Replica (Videntireplica): A body that starts with your structure and functioning but is allowed to live its own life and diverge naturally. This is perhaps the most important type for understanding real-world superimmortality, because it is the most realistic. Any brain that naturally produces your ixperiencitness, whether by coincidence, by design, or by natural processes, and then continues under its own conditions is a diverging replica. It starts as you, but becomes a different version of you.

Enhanced Replica (Enhaidentireplica): A replica with enhanced capabilities, a better version of you. The enhanced replica shares your core ixperiencitness but has greater intelligence, richer perception, or deeper emotional capacity. It is you, upgraded.

Fragmented Replica (Fidentireplica): A body that produces only part of your ixperiencitness. This is the most common and most immediately real type. Your children share fragments of your neural architecture through genetics. Your students share fragments through learning. Your friends carry emotional and cognitive patterns shaped by knowing you. Each is a partial version of you, not a complete reproduction, but a meaningful persistence of pieces of your ixperiencitness.

Substrate-Different Replica (Isoidentireplica): A body made of completely different materials (silicon instead of carbon, for example) but producing the same ixperiencitness. This becomes relevant when we consider artificial substrates for consciousness. If a non-biological system can reproduce the relevant structure and functioning, the material difference is irrelevant.

The full taxonomy of Ixperiencit Theory includes additional types (transformed replicas, merged replicas, combination replicas). The six types above capture the essential insight: your future existences will take many different forms.

Some will be exact reproductions. Some will be enhanced versions. Some will be fragments distributed across many minds. Some will exist in substrates we cannot yet imagine. The common thread connecting all of them is ixperiencitness, the quality of subjective experience that makes consciousness yours.

Superimmortality is not one kind of survival. It is a spectrum, ranging from perfect reproduction to partial persistence, from biological to artificial, from natural to designed. Every point on that spectrum is connected by the same principle we established in Part Two, and every point represents a form of genuine persistence.