But this particular dancer was distinctly different from the men and women relevéing and jeté-ing nearby. This ballerina isn’t human — it’s a robot.

In practice, this means Cubli can go from standing on its face to an edge, and its edge to a point, balancing itself with all the graceful precision of a prima ballerina.

The showcase featured robots performing alongside human dancers, modeling hats and clothing on a runway and demonstrating ...