A Blind Sample allows you to see a small example of the data inside a dataset,
without seeing any of the actual data.  The sample is random data created to
reflect the kind of data within the actual dataset.  Strings are similar
lengths, integers are in the same range, and floating point numbers have the
same precision.

The sample is not sufficient to reconstruct the dataset in any meaningful
way, but it does provide a realistic glimpse at the types of data in a
dataset.
