The key scene is from Terminator 2: Judgment Day, during a lull in the action near the midpoint.
The characters in The Terminator like to say that there’s no fate but what we make, and boy is that ever true within this franchise.
Never has fate been more mutable than it is in The Terminator.
But while Cameron also notes that it’s “not an Arnold scene at all,” removing this element had decades-long ramifications for the Terminator character.