Now that you mention it, I vaguely remember someone saying that making the Kessel run in parsecs was a goof. Thanks for the deeper explanation!
Goofs have to be explained as not being goofs, so eventually people who had a bit longer to think about the science-y-ness of the stories came up with rather better explanations that Lucas ever considered ... and they also came up with midocholorians ... well, can’t win them all.