Long-time reader, joining the data discussion

I have been reading about privacy and want to understand the underlying concepts more clearly.

Welcome. Starting with the difference between information you provide, activity a service observes, and conclusions it infers can make the rest easier to follow.

Welcome! I'm interested in the difference between something a service observes and something it infers too.

Thanks. Those three categories give me a clearer starting point than trying to understand every setting at once.