Define Uncanny Valley Meaning

The unnaturally wide gap between breasts
"enhanced" with artificial implants.

First theorized by Japanese roboticist Masahiro Mori in 1970, the Uncanny Valley basically states that the closer a robot or other nonhuman entity gets to resembling a human, the more humans will like and empathize with it.

However, there is a point in development where humans instead become strongly repulsed by the barely-human robot/entity. Fortunately, this effect fades as the robot/entity becomes less distinguishable from a human.

Although hotly debated, the theory is present in many sci-fi movies and the like, and has been used to explain people's reactions to some computer generated characters.

Like the uncanny valley, but regarding transgender people. Instead of the resulting eeriness being caused by the imperfect resemblance of a human-mimicking replica, in this case the same or similar uneasiness stems from the major or minor ways in which a trans person does not pass as their preferred sex.