Hardly a corner case. It's such an obvious question that the failure to cover it means the author isn't serious.
Knowing what you need is not magic, but knowing which products might satisfy it is not automatic. Advertising targeting, which people quite reasonably find intrusive, exists because advertisers desperately want to find people who may potentially want to buy their product.
Knowing what you need is not magic, but knowing which products might satisfy it is not automatic. Advertising targeting, which people quite reasonably find intrusive, exists because advertisers desperately want to find people who may potentially want to buy their product.