File:Black_Swans.jpg · Wikimedia Commons · See Wikimedia Commons
ابطالپذیری
Sign in to saveAlso known as refutability, criterion of falsifiability
thumb|upright=1.3|alt=Pair of black swans swimming|Here are two black swans, but even with no black swans, "All swans are white" would still be shown falsifiable by "Here is a black swan"—it would still be a valid observation statement in the empirical language, even if empirically false.