The teaser for Spider-Man: No Way Home, out this Christmas, which had a record number of 355 million views in the first 24 hours of online availability, delivers three minutes of thrills. Tom Holland is back, in the titular role, with his girlfriend from the previous Spidey movie, his best friend Ned, references to Mysterion, jokes from Benedict Cumberbatch as master wizard Dr Strange, plus engagement with that most playful of Marvel concepts, the multiverse.
Bring in the multiverse, and anything, everything, is possible. Are you old enough to recall that moment in Dallas when the shooting of JR was revealed to be a dream? Well, the multiverse does all that, and some. Time is not a constant. Black Widow (Scarlett Johansson) can die in Avengers: Endgame a few years ago, and then suddenly arrive back in her own movie, this summer.