From the perspective of industrial development history, the sex doll torso may be a key transitional form before the widespread adoption of humanoid robots. Their relatively simple structure lowers the threshold for AI integration, and the Human-Computer Interaction Laboratory at Osaka University uses modified sex doll torsos to test emotion recognition algorithms. This path of technological accumulation reflects the traditional wisdom of “gradual improvement” in Japanese manufacturing and also explains why technology enthusiasts are particularly fond of them.
