From the story.
[A]ccording to third-party contractors who spoke to Bloomberg about the practice. [They] said that they were paid to listen in on countless, occasional vulgar conversations among Facebook Messenger users, though the company never explained to them why it needed the transcriptions.
Facebook later told Bloomberg that the human transcriptions were being used to test the performance of its speech-recognizing artificial intelligence - a troubling admission that the company regularly violates people's privacy.
SOURCE
Facebook Admits It Has Been Secretly Transcribing Users' Voice Conversations
https://www.sciencealert.com/did-you-hear-facebook-has-been-secretly-transcribing-your-voice-conversations
by Dan Robitzski - 14 AUG 2019
