The principle of truth-value links is a concept in metaphysics discussed in debates between philosophical realism and anti-realism.
Philosophers who appeal to truth-value links in order to explain how individuals can come to understand parts of the world that are apparently cognitively inaccessible (the past, the feelings of others, etc.)
Assume that it is true, now, when one claims "On 22 May 2006, Student X is writing a paper for her philosophy seminar," and call it statement A.
Some philosophers, including Michael Dummett and John McDowell, have criticized truth-value link realism.
More important, they suggest that the realist appeal to the principle of truth-value links does not actually explain how the inaccessible can be cognized.