Every contingent fact has a sufficient reason
Image: Raicem, CC BY-SA 4.0, via Wikimedia Commons
Every contingent fact has a sufficient reason
The principle of sufficient reason (PSR) posits that every contingent fact must have a sufficient reason. This principle is often interpreted as implying that everything has a cause, especially within deterministic systems. However, necessary truths are not considered to require a cause due to their inherent necessity.
Example
If a tree falls in a forest, the PSR suggests there must be a sufficient reason for its falling, such as wind or disease.
Understanding PSR helps us explore the underlying reasons behind events and phenomena, enhancing our comprehension of causality and necessity.
Logical positivism
Logical positivism's verification principle claims only empirically verifiable statements are meaningful
Is–ought problem
Hume's guillotine: ethical conclusions can't follow from facts alone
logical positivism collapsed
Logical positivism collapsed because its verification principle couldn't verify itself, undermining its own foundation
Cosmological argument
Universe's existence requires a First Cause
Kripke's Naming and Necessity showed
Kripke's Naming and Necessity showed identity statements like 'water is H₂O' are necessary a posteriori
Moral nihilism
Moral nihilism asserts that nothing is morally right or wrong
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