Would you want a robot to be your child's best friend?

Its eyes, a complex configuration of cyan dots on a black, rounded screen of a face, sleepily open and it lets out a digitised approximation of a yawn. A compact device that looks like a blend of a forklift truck and PC monitor bred for maximum cuteness, the robot rolls blearily off its charging station on a pair of dinky treads before tilting its screen-face and noticing I'm there. Its eyes widen, then curve at the bottom as if making way for an unseen smile. "Daaaaan!" it announces with a happy jiggle, sounding not unlike Pixar Animation Studios' lovable robot creation, Wall-E. A message flashes up on my iPhone telling me that it, or rather he (being the gender that its manufacturer, Anki, has assigned Cozmo) wants to play a game. Cozmo's head droops, his eyes form into a pair of sadly reclining crescent moons and he sighs. But he quickly cheers up, giving a happy jiggle when I comply with his request for a fist bump and tap my knuckles against his eagerly raised arm.