Sorry about that delayed douhle post - my broadband connection went down after I pushed the button the first time, and I thought it hadn't gone through.
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It occurred to me that there's something rather Doctor Whoish about the Dylan persona. You know, the way every now and again when you were used to one Doctor Who and enjoying what he was doing, he'd have a regeneration, and a new version would take over. (And in fact there was one point in the film where Dylan was actually talking in those kind of terms, about getting a new Dylan because the old one was wearing out.)

And, as with Doctor Who, some people would get angry and miss the one they'd lost, and resent the new one as not being a patch on the old ones. And others who joined the saga later would see the one they came in for as the real one, and the earlier ones as inferior.

I've got my favourite versions too. But pretty well all of the Dylans bring something I value, and we wouldn't have that without losing the earlier ones.

Bob Dylan the Time Lord... Actually he'd be a pretty good Doctor Who, if they ever decide it's time for an American one.