As Marvel is all too happy to explain, Avengers: Infinity War is the culmination of 18 movies across 10 years.
What they don't discuss as much is what you're supposed to do if you haven't seen them all. Or if you have, but don't really remember where they left off. 18 movies is a lot! And not all of us had time to pore over each one scene by scene over the past decade!
SEE ALSO: Who's who in 'Avengers: Infinity War'
Well – not all of you, maybe. We have, in fact, spent the...