Earlier quoted context omitted.
Eh? That assumption of "not associating my personal identity" doesn't actually work. Your profile IS your personal identity, and can be associated trivially. If not algorithmically, then via one connecting piece of information supplied by various databases and no such agencies. You're living in a dream.
> Your profile IS your personal identity, and can be associated trivially. I'm hardly new to his stuff and to say it's trivial is nonsense. Most people make it trivial but it's not trivial to associate identities of people who put basic effort into obscuring them. Merely disconnecting your primary profiles from your online activity is enough to throw most mass-surveillance/drag-net stuff off, aka 99.9% of advertising…
With the sites Google runs plus running their own JavaScript on a sizable fraction of other people's web pages, they can pick up a lot of patterns, many of which would be inaccessible to police and intelligence surveillance.
Some people have nervous habits like moving the mouse around, clicking/tapping on whitespace, scrolling up and down, etc. Some always/never use the scrollbar. Some always/never open links in new tabs. Some tend to put the adjective before/after the noun in their searches. Some will rapidly open up the first 5 search results in new tabs. Some always disable instant search, and some of those change their settings to 20 or 50 or 100 results. Some use search features like the calculator, searching for "weather", stock symbols, etc, and others never do.