Jarvis is your admin assistant, putting WordPress at your fingertips via a quicksearch interface.
Let's say you've just logged in and you're on the dashboard. You want to get to a child page of your about page called "mission", but you can't remember if it's on page 2 or 5. With Jarvis it's simple. Open Jarvis and start typing "mission" and your page will show up immediately.
Once Jarvis is installed all you have to do to start using it is hit the quick key "/", type in your search (eg, "settings") and select the page you're looking for. It's the fastest way to get from the dashboard to editing your anything on the admin side.
Permalinks+ enter and you're there.
Contact+ enter and you're there.
Nigeria Caving+ enter and you're there.
The idea is to make it easier for anyone using the admin side of WordPress to get to the pages they're looking for.