Help me understand how BigTech made this recommendation.

I've experienced a few times the situation where I talk to someone in person and then see the recommendation of what we were talking about some time after in a an app or recommendation.

But this week I experienced something for the first time. I was talking to my wife in person and only my phone was present. I told her about a product that we have never talked about before. The next day as soon as she opened her …

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