Make some clarifications

[rhiever]

Feedback from Seth. Both good points.

1. In the "what story do you want to tell," you give Excel some credit for its story telling ability, but later you strongly emphasize the importance of reproducibility and discredit Excel somewhat. Perhaps you could give some clear examples of scenarios in which it's better to use coding vs gui. (e.g., One-off visualizations are common in newspapers, and the speed with which a GUI can generate them is often an advantage).

2. You mention always starting bar charts at 0, but you have box and scatters not at 0. This might be confusing to beginners, so maybe explain why it's ok not to use 0 as a base for other graph types.