The Treachery of Images by René Margritte
The text in the painting reads “Ceci n’est pas une pipe” which (more or less) translates to “This is not a pipe.” What Margritte is saying is that literally it is not a pipe, it is a painting of a pipe. But it’s also not just a painting of a pipe, it is an image of what Margritte holds as his internal concept of a pipe.
Communicating complex ideas to others is difficult because words hold different meanings for different people and the more nuanced the more language starts to get in the way. But all communication is imperfect.
It’s not solipsistic though because much of the meaning you might hold for words is contextual to the people who taught you language and your relationships with others. Your conception of those word’s meanings are your interpretation of the meaning someone else holds. Language and communication are much more effective viewed from the perspective of collaboration rather than expression. In other words working to establish shared understanding makes communication more effective.
To be fair they’re not actually lying, they are misrepresenting the truth. Facebook actually doesn’t sell your data to third parties because they lease temporary access to it instead. Selling the data would mean they couldn’t recapitalize it with the same customers.
Meta’s customers couldn’t use it to skip doing their own market research and need to already know who they want to advertise to before they buy ads with Facebook. (It does provide insights and analytics about demographics during a campaign as well)