I just watched the extras for the first time tonight and they were very good.
I especially liked the one about the Fall because Moffat and Gatiss did basically say that essentially we still might not know how Sherlock survived because he could just be lying...and they cited this other Sherlock Holmes movie that they'd got the inspiration for that aspect from where apparently Holmes is in a locked room surrounded by fire with no way out, and then the next scene he's just there in Baker Street and when Watson asks him how he survives he says "I am known to be indestructable" and that's all you get.
It actually made me feel a lot better about the episode that it wasn't just me thinking I was crazy for not accepting the Anderson explanation. That was sort of, the whole point. You're not necessarily expected to accept it.
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