This is one of the most extraordinary graphic somethings I have encountered. Babbage was developing a mechanical difference engine for calculating and then came up with the ideas for a more elaborate Analytical Engine. Lovelace envisioned possibilities for its applications. Unfortunately, she died relatively young of cancer and Babbage never actually finished the machine. Padua has envisioned what if comics of a steam punk world in which the duo actually use the gargantuan contraption. The comics are so dense with historical and technological references that the footnotes take up most of the book. Helped me better appreciate our digital world.