[spunker540]

People have dozens of conversations every day that don’t match with the hundreds of ads they see every day. But then once or twice coincidentally a conversation preceded a relevant ad and the user jumps to the conclusion that their conversation was being listened to without noticing that 99.9% of the time the ads have nothing to do with any topic of conversation. Its occam’s razor or confirmation bias or some other phenomena HN likes to point out.