To put it simply: Maximizing speed by minimizing inputs, allowing maximum information. At the end of the day, it's about clearly being able to get from one place to another. Doing so with efficiency means instant access, with productivity being adequately informed. The less compromise in these facets, the better the experience.
Check out the video below or read more about the concept here. A few more of Sentry's concept videos can be seen here. You might also be interested in checking out this switcher concept by Jesse Head.