Why would they help you sleep and take a gamble on subliminal anything working when they can just do it when you're awake?
I'm just spitballing sci-fi here, but maybe subliminal ads work better and their metric asston of computational models have told them so.
alt Hacker News
I'm just spitballing sci-fi here, but maybe subliminal ads work better and their metric asston of computational models have told them so.