The phrase "data science" is used every day, including in this very publication. We feel like we have an idea what it is. But what exactly is it? For one answer, we turn to Jeffrey Ullman, who won the Turing Award in 2020. "Where does data science come from?" asked Ullman, a Stanford University computer science professor, during his keynote address at the 27th ACM Special Interest Group on Knowledge Discovery and Data Mining (SIGKDD) conference on Monday.

A few years ago, Drew Conway came up with and shared his now-ubiquitous Data Science Venn Diagram. It was helpful, and we all were enlightened. A number of variants followed, and I am here suggesting my own enhancements. Hopefully they will be enlightening as well. I am proposing two additions: the differentiating of statistical applications (multivariate vs. non-multivariate) and the addition of discipline essences (i.e., the main contribution or function of each skill set).