I use R notebooks on a daily basis now. The ability to visualize your code and the output, with the intermediary steps all along if you want or need, is extrem

I use R notebooks on a daily basis now. The ability to visualize your code and the output, with the intermediary steps all along if you want or need, is extremely helpful. And I can just email the html notebook itself to anyone who needs to check the steps: the notebook easily outputs to HTML (which I can save to PDF on a webbrowser if I don't want to output to PDF directly, which requires installing gigabytes of latex files and fonts) I believe research should be done this way: fully reproductible and transparent, text, methods and data, all included in one file.