Whether quantum interactions with nonlinear macroscopic systems exhibiting sensitivity to initial conditions (SDIC) contribute indeterministically to outcomes depends on the unresolved question of indeterminism in quantum mechanics
Events or exchanges that happen between subatomic particles, like electrons bumping into each other or absorbing light.
Quantum mechanics(the scientific framework being discussed)
The science of how the tiniest things in the universe (atoms, electrons, photons) behave—which turns out to work very differently than everyday objects.
Sensitivity to initial conditions (SDIC)(as used in chaos theory and physics)
A property where tiny differences in how something starts out lead to huge differences in how it ends up; this is what makes weather and some other systems unpredictable even if we know the rules.
indeterminism(implied by the text's classification of agent causation as a form of indeterminism)
The view that there are certain events that are not fixed as a matter of natural law
The SD argument does not go through as smoothly as some of its advocates have thought, however. There are difficult issues regarding the appropriate version of quantum mechanics (e.g., von Neumann, Bohmian or decoherence theories; see entries under quantum mechanics), the nature of quantum measurement theory (collapse vs. non-collapse theories; see the section on the measurement problem in the entry on philosophical issues in quantum theory), and the selection of the initial state character