Data Science helps bring all the disciplines together around the "data" which describe a phenomena of interest (e.g., healthcare, travel, construction) and provide mechanisms to explore and uncover deeper meaning and understanding to drive human fact based knowledge.

As a science, data science can be broken down to a series of lifecycle steps that help drive you from what is your question to what are potential answers.  Understanding this process is key to reproducible research.

Folks ask questions like, do I need to know statistics to be part of a data science team, what is descriptive, versus predictive and prescriptive analytics?