But Star Wars Episode IV: A New Hope is on, and I find myself wondering if George Lucas paid any damn attention at all to his own movie when he was farting out the prequels that are supposedly tied to this series.
This is kinda low-res, but it has the part of the movie I want to look at. It's also one of the very few parts of the original trilogy that tells us the backstory. http://www.youtube.com/watch?v=YZ_mjtTCdcg
This is from the shooting script, lovingly stolen from http://www.imsdb.com/scripts/Star-Wars-A-New-Hope.html. I'll offset my comments in red...
He feared you might follow old Obi-Wan on some damned-fool idealistic crusade like your father did. Again, Anakin didn't follow Obi-Wan crusading
Is this overly dissecting one scene? Probably. But this is basically the only thing the prequels had to jive with --- this and a bit of Yoda's explanation in Empire. So why have basically everything Obi-Wan explain be contradicted?
Later on after Jedi they even make the point that Obi-Wan's misleading information about Vader killing Luke's father is true from a certain point of view... and ignore the fact that apparently everything else he said at the time was also off.