Machine Learning Tetrad = Business Knowledge + Statistical Understanding + ML Algos + Data

In the post called Learning Market Dynamics for Optimal Pricing post of Sharan Srinivasan he talks about how AirBnb uses ML and Structural Modeling (Mathematical + Statistical Modelling) combined to get some results about the offer to guests the optimal pricing based in market dynamics based in the anticipation of the booking and the difference the time between the booking date until the check-in (also know as Lead Time).