Python motivation

This is a rough version of motivational slides for python - based on @sritchie73's R motivational slides.
Idea is that they would be presented at the beginning of a python lecture. Thoughts?
I'm not sure about this statement. 
First, I would say that Python has vastly more options for visualization than R. It's certainly true that you don't have to work as hard to get a plot out of R, but you can't customize ggplot like you can customize matplotlib, yt, etc.

Also, I didn't realize R wasn't good at big data. Is that really true?

Anyway, Python's main advantage over R is that it does more than one thing. Namely, python can effortlessly glue tons of specialized libraries for math, science, graphics, etc. It's a little harder to link to those things with R... largely because people don't develop big libraries for R... just python.