In contrast, for data-driven apps like I need, the point is to collect various kinds of numbers upon which we can do various kinds of statistics. Of course, all that can be done in SPSS or SAS once a bulk data extraction is accomplished, but eventually it would be great to build in R via PG so that lots of cool analytic and graphing stuff can be done within the Assessment package. If we munge everything that Assessment collects into strings, then this becomes impossible. And in the near term, the ability to be able to do means, stddevs, and other simple descriptive statistics on the fly is an absolute requirement for the Assessment package. For me anyway.