Google: Machine Learning Will Never Take Over the Whole Search Algorithm

Ever since Google announced RankBrain, a machine learning algo, there has been much speculation about what other parts of the search algo Google might use machine learning in. While they have said Penguin is not a machine learning algorithm, there is speculation that other parts of the search algo could incorporate machine learning, especially with comments John Mueller made recently about machine learning being used in a lot of Google's systems. During the breakfast keynote at Pubcon last week with Gary Illyes and Eric Enge, the use of machine learning in the Google algo came up with RankBrain being discussed. Enge then asked "It hasn't taken over the whole algorithm?" I can probably say that it will never take over the whole algorithm, or the core algorithm.