> Our recommendation system is built on the simple principle of helping people find the videos they want to watch and that will give them value Well it doesn't

> Our recommendation system is built on the simple principle of helping people find the videos they want to watch and that will give them value Well it doesn't live up to the principle, not even close. > It’s constantly evolving, learning every day from over 80 billion pieces of information we call signals. This is probably why. It's a positive feedback loop mechanism for noise. Another reason why is probably that it's metric for "give them value" is engagement. Its a dishonest metric, because "gives them value" is less important than "give us value", so even if you found that it doesnt give them value, you've got a perverse incentive to continue doing it and pretending it is in their best interest.