Marvel Studios' Kevin Feige has cleared up the difference between The Snap and The Blip. http://bit.ly/2G1ZIob pic.twitter.com/QN11RpK8j2
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I think their school is one of those middle school/high school hybrids? I chalk up Mr. Harrington's wife/blip mark as another continuity error a la Homecoming's " eight years earlier" gaffe