"The concept of the uncanny valley, coined by the Japanese roboticist Masahiro Mori in 1970, refers to the phenomenon where a humanoid robot becomes increasingly lifelike, but at a certain point, a sense of unease or revulsion sets in. This is due to the fact that the robot appears almost human, but not quite, which triggers a feeling of discomfort or fear in the human observer. The uncanny valley is a significant concept in robotics, as it highlights the importance of striking a balance between human-like features and maintaining a sense of otherness in order to avoid eliciting negative reactions in humans."