This is right for the drunken dev thoughts, but not for the Herodotus example. "In vino veritas" - in wine there is truth - means that people expose their true

This is right for the drunken dev thoughts, but not for the Herodotus example. "In vino veritas" - in wine there is truth - means that people expose their true thoughts when they're drunk rather than the filtered version they might present when sober, but the story of the Persians is more about the fact that there's value in considering both drunk and sober reactions, particularly when they tally.