This is also a question that relates very much to Python as a statistics workbench and excel as a statistics workbench. I know there is a huge discussion about Ruby versus Python but this is not the point on this question. I thought that Ruby being faster than Python and having a very natural syntax could benefit me to understand statistics and could be also a good alternative to R (which is also of my interest and was cited at my other question on R here). For instance, on one of the Google Tech lectures I've seen (cited on the linked question here, the instructor complains that R is slow while creating a for loop). With Ruby there is also Rails, so maybe there would be possibility to bring both together as well (Python does have Django, but again I'm not getting into that).
So, the question stands the same, but for my interest, in Ruby:
What can you recommend if I wanted to use Ruby as a "statistics workbench" to replace R, SPSS, Python, Excel etc.?
What would I gain and lose, based on your experience?
Please note I am considering this question based on the previous Python and Excel question. If you believe using Ruby and Python (or Excel) would have the same impact, then please say so and point to the arguments of any previous question, the intent of this question is not to replicate the previous questions for the same answers. I do, however, believe that there are differences (such as the speed of the language and the syntax), but I would also specially like to know the recommendations for Ruby or if there is, for example much less available for it than say for Python or Excel. So please consider the previous answers for these very similar questions but for other language/program.
Edit: Just to highlight since the answers seems to be going on the other way, the answer that I was looking for is one such as the chosen answer at the Python question I have linked to. It is not about learning statistics together with Ruby. I did point to the question learn statistics with R. If it is possible great, but I am not expecting to learn statistics with Ruby at the same time. You can assume statistics background for this question.