Free will

===== Causal determinism =====
{{Main|Determinism}}

Causal determinism is the concept that [[Event (philosophy)|events]] within a given [[paradigm]] are bound by [[causality]] in such a way that any state (of an object or event) is completely determined by prior states. Causal determinism proposes that there is an unbroken chain of prior occurrences stretching back to the origin of the universe. Causal determinists believe that there is nothing uncaused or [[Causa sui|self-caused]]. The most common form of causal determinism is nomological determinism (or scientific determinism), the notion that the past and the present dictate the future entirely and necessarily by rigid natural laws, that every occurrence results inevitably from prior events. [[Quantum mechanics]] poses a serious challenge to this view.

Fundamental debate continues over whether the physical universe is likely to be [[causal determinism|deterministic]]. Although the scientific method cannot be used to rule out [[indeterminism]] with respect to violations of [[causal closure]], it can be used to identify indeterminism in natural law. [[Interpretations of quantum mechanics]] at present are both [[deterministic system|deterministic]] and [[indeterminism|indeterministic]], and are being constrained by ongoing experimentation.<ref name=GroblacherPaterek2007>{{cite journal|last1=Groblacher|first1=Simon|last2=Paterek|first2=Tomasz|last3=Kaltenbaek|first3=Rainer|last4=Brukner|first4=Caslav|last5=Zukowski|first5=Marek|last6=Aspelmeyer|first6=Markus|last7=Zeilinger|first7=Anton|title=An experimental test of non-local realism|journal=Nature|volume=446|issue=7138|year=2007|pages=871–75|issn=0028-0836|doi=10.1038/nature05677|pmid=17443179|arxiv=0704.2529|bibcode=2007Natur.446..871G|s2cid=4412358}}</ref>
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