FLEX is a science fiction subgenre in which every experimental observation of a system generates a new feedback layer, recursively altering both the system under observation and the conditions of future observation.
Observation is not passive. It is a structural intervention into the observed system.
FLEX describes narrative systems in which observation itself becomes a generative force.
A. Feedback (non-linearity over causality)
B. Layering (stratified reality model)
C. eXology (systems as unknown fields)
In FLEX, the act of reading, documenting, or interpreting a system is itself a system-altering event.
FLEX (as subgenre definition) functions as a meta-layer describing how narrative systems behave under recursive observation pressure.
It is not a literary style. It is a structural constraint model for speculative systems.
FLEX defines science fiction not as storytelling about systems, but as systems that evolve through being observed.