I'm sure there's a continuum between "people like us" and "those who have no (positive) interest in Star Wars whatsoever," so I suppose we can at least hope Sagan would understand the reference and appreciate it. I know Isaac Asimov also pointed out the "parsec misuse," but that does bring to mind how there are two different yet "official" explanations, George Lucas saying in the DVD commentary Han was referring to "clever navigation" and printed transcripts claiming he was trying to impress Ben Kenobi with "obvious misinformation"... although, of course, that's more something "people like us" would know about in the first place.