finalproblem:Most of the time I manage to talk myself out of posting speculation based on...

finalproblem:

Most of the time I manage to talk myself out of posting speculation based on Sherlock filming, but there’s always eventually something that breaks me…

So, spoilers below, but on the milder side since I’ll try to limit myself to the minimum info needed to make the point.

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Yes! I like this explanation of the shark fin. Very plausible.