Facebook's algorithm almost seems like a quintessential example of why you need to choose good metrics in optimization problems. IMHO Facebook gave the golden

Facebook's algorithm almost seems like a quintessential example of why you need to choose good metrics in optimization problems. IMHO Facebook gave the golden goose (algo) enough feed to gorge itself on and now it is unhealthy and only lays rusty iron eggs. Yes, they optimized for engagement, and it destroyed the platform. This is like a parable or something. Truly. In business school 10 years from now I fully expect people to write case studies on the business effects of algo optimization and local minima, etc, etc...