As IEEE Spectrum reports, previous versions of Intera kept large chunks of a robot’s decision tree hidden from users. Intera 5, on the other hand, uses a graphical interface to show users exactly why Sawyer is behaving the way it is, step by step. It also allows them to make any changes they like—either by directly programming new steps, or by using the robot’s impressive teach-by-demonstration feature to guide its arm and tools in the right sequence.

Rethink’s first robot, a two-armed model called Baxter, didn’t sell very well—but it was a proof of principle that robots could use things like force sensors to avoid hurting humans while still performing useful industrial tasks. It’s also been a hit in the research community, leading to all kinds of neat ways to teach robots new tasks.

With Sawyer, Brooks built a smaller, faster, and more precise robot that he says is proving much more popular. Whether Intera 5 proves to be the killer app for turning Sawyer into an indispensable, user-friendly factory worker, however, remains to be seen.

(Read more: IEEE Spectrum, “How Robots Can Quickly Teach Each Other to Grasp New Objects,” “Rethinking the Manufacturing Robot”)