Humanoid robots are here, but they’re a little awkward. Do we really need them?

Building a robot that’s both human-like and useful is a decades-old engineering dream inspired by popular science fiction.

While the latest artificial intelligence craze has sparked another wave of investments in the quest to build a humanoid, most of the current prototypes are clumsy and impractical, looking better in staged performances than in real life. That hasn’t stopped a handful of startups from keeping at it.