Right now, humanoid robots are where smartphones were in 2007. The question is how fast they will transform our lives.

Tesla chief Elon Musk said in a call with investors on Wednesday that his team is “on the cusp of something really tremendous” with Optimus, the humanoid robot that it’s been working on since 2021.

Walking, talking humanoid robots that were once firmly the domain of science fiction are on their way. In fact, a Morgan Stanley report recently predicted that 13 million human robots will be among us ...