Rock. This is what my housemate just told me.
I mean, there's the Death Star starting construction at the end of Episode III and he turns to me and points out it take them 20 years to make it but it only take them about 3 years to make the second one.
I suggest there were probably union issues and some tricky design faults they had to iron out.
Then I stick on the commentary this evening and blow me, Lucas says just that!
I am the best.