On the audio commentary to the Matrix films, the "critics" at one point, point out the seeming contradiction between "don't think you are, KNOW you are", and "your mind makes it real".
Then some dumb twerp kid says "it's not the spoon bending, it's yourself", and then seconds after "there is no spoon". What??!
It's just your typical vague pseudo-philosophical, pseudo-mystical mumbo jumbo, that falls apart under the slightest application of scrutiny, but can certainly be reconciled within itself using some kind of apologetic mental gymnastics.
Point is, I can't think of such "mythology" contradictions in the PT, right now, save for character contradictions (Vader's relation to the Emperor in V vs. in VI; Luke abandoning his training, Luke being fully trained), but at the end of the day, lines like "do it or do not; there is no try" are pretty dumb themselves.
It's just common clichés thrown into the pot to invoke an image of profundity, and when you throw in too many of them, contradictions are bound to ensue.
But hey, yea, the prequels tune that up to 11, so yea - that chase sequence was, indeed, incredibly dumb :D
Some plot holes Plinkett didn't mention:
HOW did the robot not hav a self-destruct? Why wasn't it ordered to fall down somewhere or crash directly into some building, instead of just kinda rubbing on some wall for a few seconds? HOW did Obi Wan expect the robot to lead him to the assassin? WHY did the assassin make herself known by shooting the robot (insead of Obi Wan's face), and then make herself even more obvious by flying away on a speeder with a distinguishable engine sound?
That's just dumb.