Somewhere in this documentary (too lazy to link to the exact moment), Kershner describes ESB as a fairy tale and admits that there are a number of scientifically inaccurate elements.

www.youtube.com/watch?v=5aS-HIgvANE"

I've pointed out many of these elements in my Armchair Movie Critic thread in the Off Topic section, but my criticisms were tongue in cheek. All three movies could be torn to bits if someone just felt like whining. But the point is that they are all fairy tales, and folks who criticize ROTJ for certain flaws should use the same standards for ANH and ESB.

ROTJ is a good movie in my mind. I don't mind others disagreeing, and I see flaws with it as well, but I still love it. Opinions can differ from person to person, and we are not all idiots simply because we don't all think alike. I get really tired of people who tell me I'm stupid for enjoying ROTJ, or even for enjoying the PT.