This might help you: https://en.wikipedia.org/wiki/Rhetorical_question https://en.wikipedia.org/wiki/Rhetorical_question If Facebook has such a tool, it's cer

This might help you: https://en.wikipedia.org/wiki/Rhetorical_question https://en.wikipedia.org/wiki/Rhetorical_question If Facebook has such a tool, it's certainly not public knowledge. The parent comment was clearly meant to make a point that Facebook could have such a tool, even if it's not public knowledge. I was expanding on that point that Google could as well. Hope that helps.