https://www.bbc.com/news/technology-49585682 [bbc.com]
A recent study has "proven" that Android and Apple phones do not eavesdrop on conversations.
I think this is the classic can't prove a counterfactual thing, ("we've proved that no birds swim from this survey of life in a nearby park"). However, I thought this would be an interesting article, and possibly start some good conversation... if nothing else, due to poking potential holes in their experimental techniques and data analysis.
Speaking for myself, I find it interesting they completely ignored the increase of data usage of Facebook in an noisy.