I read a recent interview with Hadley Wickham. Two things stood out to me.
The first is how down-to-earth he seems, even given how well-known he is in the data science community.
The second was this quote:
Big data problems [are] actually small data problems, once you have the right subset/sample/summary. Inventing numbers on the spot, I’d say 90% of big data problems fall into this category.