If they’re following their schedule, they will have arrived yesterday.
Yesterday? But yesterday is not a part of the future? I'm confused now.
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Sign up to join this communityIf they’re following their schedule, they will have arrived yesterday.
Yesterday? But yesterday is not a part of the future? I'm confused now.
This is a confusing sentence, but I would interpret the "will" here as meaning "must" rather than literally referring to the future. "They must have arrived yesterday."