>you upload pictures, you like stuff, you spend more time on someone's profile
>Google doesn't have that graph
Google has that information from the contacts of all Android phones, Google Photos, etc. Granted they don't probably have the information from iPhones, but then a lot of people don't have or use their FB account too.
> No one logs into Google search and give their identity
No one here. Most of the non-tech people (and some tech people) do log into Chrome and Google account, which means they are logged into Search too.
Google has that information from the contacts of all Android phones, Google Photos, etc. Granted they don't probably have the information from iPhones, but then a lot of people don't have or use their FB account too.
> No one logs into Google search and give their identity
No one here. Most of the non-tech people (and some tech people) do log into Chrome and Google account, which means they are logged into Search too.