Inside X's Mission to Make Robots Boring

These creatures are targeting tabletops. One of them will wheel up to a table and ponder for a few seconds to determine if people are seated; if so, it moves on until finding one that's empty. After lingering for a second--maybe taking the algorithmic equivalent of a deep breath before the "Let's do it" moment--the robot twirls and unfurls its limb, stretching the arm over the table to methodically cover the surface with a clear disinfectant. Then it withdraws the arm to squeeze out the excess fluid into a bucket on its base. Task completed, it moves on, seeking another table to swipe.