How will this project change the world? Probably very little. For one, in the new world there will be the shields available for people to use in their projects — so it will be slightly easier to start, slightly easier to build something with a display or buttons, and maybe even slightly easier to learn something new about electronics. There will also be a new version of the author of this project, with slightly more experience, possibly using that experience to build further projects. The world will also be slightly more polluted, the distribution of wealth will shift minimally, and so on.

So is this project world-changing? Definitely! Will you notice the change? Only if you are paying attention. Will it matter? It will to me, and perhaps a bunch of people who want those shields.