It seems Rankbrain is a marketing ploy by Google. Supposedly: it is essential to 15% of queries, affects every user query, is the third most important ranking signal… Mmmmmm. Omi, David and Doc Sheldon are here to get away from the hype, cut to the chase and tell us what we need to know about RankBrain. Three years on (more or less to the day, weirdly enough!), in practical terms, what does it mean to us as marketers? How has the industry adapted? How do we need to adapt now we know more about it? How should RankBrain affect our outlook for the next few years?