Without sounding crass: 1. It works already (IE it's already in use) 2. It works really well (or else they wouldn't be using it so broadly) 3. Considering ho

Without sounding crass: 1. It works already (IE it's already in use) 2. It works really well (or else they wouldn't be using it so broadly) 3. Considering how long this was said to be in development, it also likely means they are working on the next big improvement before these guys have even gotten the current one working.