Familiar. I think the biggest issue is understanding workflow. My hunch is that some developers view a data analysis project as a program... it needs to have

Familiar. I think the biggest issue is understanding workflow. My hunch is that some developers view a data analysis project as a program... it needs to have these data processing steps performed, summarized in this certain way, and saved off in that certain format. Once those queries are defined, the program is ran and the analysis done. The actual work the analyst is doing is far more ad-hoc than that. It's iterative and frequently will get torn down, rebuilt, and joined to other sources, as they discover new aspects to the data. They need their hands on the raw data, not on a specifically summarized version of it.