Correcting Wrongly Interpenetrated Browsing Information Is the Driving Force to Get More Information About You.
They got it wrong example: A young teenage girl got advertisements concerning maternity clothing and nursery furniture coupons for baby items in the mail. Because of this, her father went berserk against the retailer, until he realized his daughter had searched for similar items online looking for a gift to her older cousin. Can a third party be able to understand that this one search related to a gift and not a personal interest?
You put the wrong information in your profile example: Have you ever done a search on your device to help a family member or friend find something? Were you thereafter plagued by ads that were of no interest to you? Please realize that those helpful searches, you did for others, are now permanently part of your personal profile.
Why they need more information example: Have you ever done searches on your device to find a product which you purchased. Were you thereafter plagued by unwanted ads for that already purchased product? You would think: how dumb the data collectors are. BUT this problem, is what motivates the data collectors to get more and more of your personal data, so that they can sell more sale-producing ads.
The Future: Personal data collection will only get better, as it continues to be driven by these strong market needs. Over time your collected browsing data will grow, and your analyzed profile will become more complete, more reliable. Your analyzed profile, so improved, will reach that so called “goal” of more reliably predicting your future actions, better than you can yourself.