@neauoire :: I feel like trying to define a grand over arching definition of "elegance" is like trying to define the mean of True Happiness. For some people the terseness of functional programming is elegant. Others find simple procedural programming to be elegance.
A group of friends I'm in tend to find Factor code baffling and impenetrable. Elegant code should be what you find best express you intent.
@CapitalEx there might be a component in appreciating elegance that is familiarity, or understandability or context too ;)