Off hand, the costs of GPL'd software are not hidden at all. R for instance demands that a would be user sit down and learn the language. This in turn pushes a user into learning more about statistics than the simple overview that Stat 1 presents a student.
In contrast, any program that simplifies use also tends to encourage a simplified understanding. So, I believe it can be legitimately argued that the real hidden costs lurk in "easy to use" software, especially commeercial software with GUI interfaces. JDougherty ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
