If you do find yourself shopping for a flight, a pair of underwear, or even a concert ticket, and you want to be treated like a stranger, make yourself a stranger online. During Amazon’s semiannual Prime Day bonanza, the underwear I usually buy was on discount at a price so low I assumed it was just for me, the frequent shopper. I got three packs and felt good about it. But a few days ago, when I saw the news that Delta Air Lines was using AI to personalize its flight prices, I got mad. I started to suspect that something sinister was behind my great deal on drawers at Amazon. Was that...

2 weeks ago

On HALO