Right. I'm not comfortable with this idea of big data being dependent on the actual file size of the data. There really are problems where doing stuff like read

Right. I'm not comfortable with this idea of big data being dependent on the actual file size of the data. There really are problems where doing stuff like reading files or using a relational database break down and you need something else that's more specialized in solving a problem even if the dataset is just a couple GBs. (So in my mind big data is a reference to specific tools or approaches like map-reduce, etc.)