Talking of changing the subject, did anyone hear this radio programme? It's on iPlayer:
The Canon Of Comics
It's called the Canon of Comics and is an essay about continuity and canon, by a new young philosopher, Jon Adams, who knows far too much about Crisis on Infinite Earths. Very interesting listen. (If the link doesn't work go to iPlayer and look for The Essay or New Generation Thinkers or The Canon Of Comics).
And, yes, someone sent me the link. I'm not a full time Radio 3 listener. Maybe I should be if this is what I keep missing.