But the use of the term "familiar" here is, alley oop, a metaphor. Which is what Raskin takes the long way to say in the article you reference.

My point is: this problematic does not only apply to UI design. In general, whenever we use abstraction (which we do all the time, often in the name of brevity) we are taking a risk-- and one of those risks, to extend Raskin's metaphor, is uncanniness.