What do you think, ChatGPT? If it can create almost perfect summaries with a prompt; why wouldn’t it work in reverse? AI built into Windows could flag potentially subversives thoughts typed into Notepad or Word, as well as flag “problematic” clicks and compare it to previously profiled behavior. AI built into your GPU could build an behavioral profile based on your interactions with your hentai Sonic the Hedgehog game.
Have a few friends over and have them all sit around a table. Have everyone place their smartphones on the table (turned on, of course), and proceed to discuss something like the merits of drills from Harbor Freight versus Ryobi, Milwaukee and DeWalt. Ideally with one person speaking at a time. Wait about a week and ask your friends if any of them noticed an uptick in ads for drills or powertools in general.