facebook's business is advertising, and the more time people spend on facebook, the more valuable facebook's ad space is. If depressed people spend more time on

facebook's business is advertising, and the more time people spend on facebook, the more valuable facebook's ad space is. If depressed people spend more time on facebook instead of getting out, then it's in facebook's interest to have their product make people depressed. If angry people spend more time writing rants on facebook, then it's in facebook's interest to make people angry. I may be confusing causation with correlation, but I am willing to bet that the reason facebook's product has repeatedly been shown to cause harm is because the harm is good for facebook, not by accident of design. The article linked below describes some of the anti-features that make slack addictive. I have no reason to believe that slack and facebook are not aware of the addictive power of their products and do not cynically designin their products to enhance their addictive potential. https://medium.com/@satyavh/the-real-reason-slack https://medium.com/@satyavh/the-real-reason-slack