From scatter plot to slope chart

Gerardo Furtado, a Brazilian teacher who studies biology and evolutionary science, and writes about them, has designed a fun interactive graphic based on the cover of The Functional Art. Maybe this will help me overcome my notorious frustration with d3.js —but only after I finish learning proper data manipulation with dplyr; I am using the amazing DataCamp for that.

Here's an animated GIF of Gerardo's interactive graphic: