"Rather than try to bring a lot of infrastructure to them and expect them to learn how to use the Internet, the idea was to make a technology that even Grandma could use, figuring that Grandma could probably walk up to a box and push a button."
VOA: special.2009.10.12
So what would I want to do? I'd like to somehow walk down each of the digits one at a time and add them up. Ah, that's a looping mechanism, right? I need to have some way of walking through them.