  The author's attempt to construct a local causal model of quantum theory (QT)
that includes quantum field theory (QFT) resulted in the identification of
"quantum objects" as the elementary units of causality and locality. Quantum
objects are collections of particles (including single particles) whose
collective dynamics and measurement results can only be described by the laws
of QT and QFT. Local causal models of quantum objects' internal dynamics are
not possible if a locality is understood as a space-point locality. Within
quantum objects, state transitions may occur which instantly affect the whole
quantum object. The identification of quantum objects as the elementary units
of causality and locality has two primary implications for a causal model of
quantum objects: (1) quantum objects run autonomously with system-state update
frequencies based on their local proper times and with either no or minimal
dependency on external parameters. (2) The laws of physics that describe global
(but relativistic) interrelationships must be translated to a causal model of
interactions between quantum objects and interactions between quantum objects
and the space.
