[dm319]

It's a very different language to imperative languages out there, so it's not surprising that an introductory course would be confusing. There are several ways to do things in R (for example subsetting data, or pulling out elements of structured data), but that doesn't mean it's inconsistent - they are convenience functions. As you say, you have to do some statistics 'in anger' to really get why R is so good. When I've taught introductory sessions on R I focus more on a very short analysis to demonstrate what it is good at.