There's a difference between seeking a product, being invited to investigate a product, and being Sold a product. Examples:

• I drink a couple of gallons of milk every week. I go to the part of the grocery store which contains milk, and select the kind I know that I prefer (skim) in a brand selected for price, familiarity, attractive packaging, or incidentally as part of sorting by expiration date. No person has to interact with me to cause me to choose the milk; if it's not available at one store I will arrange to get it elsewhere. I have sought this product.

• On my way to check out of the store with the milk, there is a display of free samples of goat cheese, of a type which I haven't eaten before. I find taste relevant in my cheese selection, so I try some. It tastes good, so I buy a round of the cheese. No person has to interact with me directly to cause me to choose this cheese, but if it hadn't been there I wouldn't have bought any. I may continue to buy the same cheese regularly. I have been invited to investigate this product.

• Between the goat cheese and the cash register, I am stopped by a salesperson who entices me to buy a specific brand of yogurt. I have neither a preexisting interest in yogurt, nor any reason specific to the brand to select this and not another yogurt even if I did. The salesperson says nice things about eir brand of yogurt: the company that makes it does good things for the environment, the yogurt contains ingredients I don't recognize which are reputed to have health benefits, the container is recyclable, the yogurt is flavored with an exotic tropical fruit, if I buy this yogurt I can enter a drawing to get a free tote bag, etc. Note that none of these things were involved in my choice of milk or cheese, above: they aren't the kind of information I find relevant to my selections of dairy products. They're things I find weakly positive but not enough to look for them actively. And they're presented by a person, not by a label. While I might buy this yogurt, and might even continue to buy it in the future, it has entered my life by channels via which I did not mean to admit yogurt when I walked into the store.