C.E. Evans wrote:
Actually, it was Roddenberry's attempt to explain why there was another Constitution-class ship conveniently there and ready to go for Kirk. Having it previously been the old Yorktown made sense for Roddenberry.
It may have made sense to Roddenberry; that doesn't mean it actually makes sense.
If the Yorktown at the beginning of ST4 had a full crew aboard, then it had to be a fully operational ship. The E-A at the beginning of ST5 quite obviously is not, even after what appears to be several weeks of work.
Kirk: "You told me you could make this ship operational in two weeks. I gave you three. What happened?
Then there's this:
Scott: "All I can say is they don't make them like they used to."
Doesn't sound like he's talking about a ship that's been around for a number of years here.