It's disingenuous to assert that Google doesn't know about the data that is collects, sells it (the http_referrer coin collection), and that the advertiser whose link you clicked doesn't know you, perhaps by name (referring to the fact that the IPv4 address space has largely known destinations to the street address and user-characteristics).
Upsetting is that claims of unidentifiable use are in fact, one of the most hilarious lies in computing, as all of this information in a click-thru is so handily re-assembled. There is no privacy here, in the very tiniest. Google's business model is to know--==> you. They don't have this right.
Slashdot knows who I am. My IP is known. They can be linked. One can become somewhat anonymous on the Internet, but only by trying really, really hard to accomplish this, and it's transient at best-- as accumulated information becomes your dossier.
The implications of dossiers are for a different forum, but in this circumstance, this thread, this post, it's my criticism of the pretension within the post, viz: "And with your permission and all of that, you are interacting with the things going on in the room" means that your devices will be forced to respond to its ambient environment, and what you do, even say, maybe your sexual responses, all of these will become exposed, modesty and your intentions to hide these things, vanquished by environmental probes.