It's referencing a character from Greek mythology. Cassandra was a woman who was cursed by Apollo to have visions of the future, but which no one would ever believe. Hence the expression "Cassandra truth" is something that is true but which no one believes.
It's referencing a character from Greek mythology. Cassandra was a woman who was cursed by Apollo to have visions of the future, but which no one would ever believe. Hence the expression "Cassandra truth" is something that is true but which no one believes.