Could someone help me understand this? Will a user be assigned one floc ID, or multiple? Or is a floc ID a unique ID to a single user? It seems like if each us

Could someone help me understand this? Will a user be assigned one floc ID, or multiple? Or is a floc ID a unique ID to a single user? It seems like if each user only gets a single floc grouping, that this is more private than a system like FB, where any given user could be part of thousands of different targetable "interest groups." Am I missing something? On FB, for instance, I could be targeted for liking Infinite Jest. And separately for like Mountain Biking. And separately for living in Pennsylvania. It seems like Google is doing a lot to obscure the user information into a data black box. Maybe I don't get the idea.