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Now your readers can:   \begin{enumerate}  \item \textbf{Launch IPython} directly in their browsers (by clicking on the link in the bottom left of the figure block);  \item see your annotated data code  and code; data;  \item test it;  \item adjust it to their heart's content. pleasing.  \end{enumerate}  Beyond the obvious advantages this provides for streamlining the scientific process, imagine implementing this to facilitate classroom learning or centralizing repeated analysis in a lab setting. What's more, it gives you a place to share and  be very descriptive with your code. In the predator-prey modeling example below, below (no data, just a model),  a detailed walk-through is given in the IPython Notebook. The hope is that anyone so inclined could modify or fork it, perhaps adding a third organism orsome  other environmental constraints. Or, if they had some relevant  ecological data, to test to see how well the model fit it. fits.\\  Go check it out!