The moral controversy about
sex doll heads is essentially a discussion on the threshold of facial realism. When the facial accuracy of the
torso sex doll exceeds the critical point of the "uncanny valley effect", the user will have ethical confusion. The latest research suggests that the pupil distance should be controlled within the range of ±15% of the human average value, which can not only maintain the value of emotional projection, but also avoid cognitive conflicts caused by excessive simulation. This discovery is reshaping industry design standards.
