Bunuel wrote:
Physicist: Determinism is the view that every event has a preceding cause sufficient for its occurrence. That is, if determinism is true, then the events that are presently occurring could not have failed to occur given the state of the universe a moment ago. Determinism, however, is false because it is impossible to know the complete state of the universe at any given time since it is impossible to measure accurately both the position and velocity of any given subatomic particle at a particular time.
The physicist’s reasoning is most vulnerable to criticism on which one of the following grounds?
(A) That it is impossible to measure accurately both the position and velocity of any given subatomic particle does not imply that it is impossible to know either the position or velocity of all subatomic particles.
(B) That the complete state of the universe at any given time is unknowable does not imply that the states at that time of the individual subatomic particles making it up are unknowable.
(C) That it is impossible to measure accurately both the position and velocity of any given subatomic particle at a particular time does not imply that its position or velocity cannot be accurately measured separately.
(D) That it is impossible to know the complete state of the universe at any given time does not imply that there is no complete state of the universe at that time.
(E) That the position and velocity of any given subatomic particle cannot be jointly measured with accuracy does not imply that this is the case for the position and velocity of all subatomic particles.
Option
(D) is correct because it correctly identifies the flaw in the physicist's argument. The physicist argued that determinism is false because it is impossible to know the complete state of the universe at any given time. However, option (D) points out that just because we cannot know everything about the universe at any given moment does not mean that there is not a complete state of the universe at that time.
In contrast, the other options are not correct because they do not address the core issue with the physicist's argument.
Option (A) argues that we can still know some information about individual particles, but this does not address the claim that we cannot know the complete state of the universe.
Option (B) similarly argues that we can still know something about the state of individual particles, but this does not address the physicist's claim that we cannot know the complete state of the universe.
Option (C) argues that we can still measure position and velocity separately, but this again does not address the issue of knowing the complete state of the universe.
Finally, option (E) argues that we can still measure the position and velocity of all subatomic particles simultaneously, but this also does not address the issue of knowing the complete state of the universe.