It may not even be that they advertised kayaking to you. They may just have a very good model of your behaviour that predicts you’re likely to be interested in kayaking.
Not that hard to understand. They have an extremely large dataset to analyze for “subjects adjacent to these searches” and it returns “kayaking” among other things. Then just show ads for those related things. You ignore the things you’re not considering as background noise, and notice the ones related to your new hobby.
It may not even be that they advertised kayaking to you. They may just have a very good model of your behaviour that predicts you’re likely to be interested in kayaking.
Honestly this is scarier, and harder to understand. But I suspect it to be the case
Not that hard to understand. They have an extremely large dataset to analyze for “subjects adjacent to these searches” and it returns “kayaking” among other things. Then just show ads for those related things. You ignore the things you’re not considering as background noise, and notice the ones related to your new hobby.
Sorry, harder to understand for the general population. Most people just think their phones are listening to them.
Ah fair enough