I'm using Fastmail with that feature enabled (download images only when the sender is in your contacts) but it doesn't prevent them from emailing me at least once per week.
Anecdotally, I purchased a heated blanket from Amazon for my father and had it shipped to his address. When I went to look at order details, Amazon advertised to me other things the person I shipped this item to may like. Men Diapers, Pet treats etc... I don't own a pet due to allergies and I am very young to be searching for adult diapers. I found it very rude and unprofessional of Amazon to share such a personal suggestion with me.
I called Amazons customer service to complain about their suggestions. The representative said that their suggestions are based on my searches and purchases. I believe the suggestions are also based on the purchases made for that address.
My father doesn't even get an option to opt out of Amazon suggesting things he's purchased, to other people to purchase for him. There isn't an option for privacy.
Facebook announced that they are using ML to fix compilation errors just yesterday. They said they were contracting out companies to build ASICS for the AI. We are a long way from AI making good medical decisions.
It's still a waste of his time to deal with it. The brain has only so many ultra-neuroplastic years, why burn them on dicking around with npm when they could be leveraged to focus on more universal concepts?
I wonder how the front page rankings would differ if Hacker News (secretly?) only counted upvotes if the user actually clicked the article link (or at least loaded the comments thread and read for X minutes) before voting.
You make an excellent point. How do they rule out other leading causes of the loss of intelligence?
There have been studies that show high amounts of road traffic cause increased secretions of a certain enzyme into the frontal cortex, causing high levels of stress and increased memory loss.