It's not like the producers of The Simpsonsare obsessed with continuity – in fact they play it rather fast and loose with the timeline on the show.
But, when executive producer Matt Selman spotted a pretty big continuity blunder on Wednesday, he thought it worth sharing on Twitter.
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"Maggie is in photo on wall behind Marge telling Homer she’s pregnant with Maggie," Selman wrote alongside a screen shot from episode 13 of the sixth season of The Simpsons.
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Fellow Simpsonswriter Al Jean was quick to respond to Selman's observation.
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Simpsonsfans chimed in and discussed who they felt was to blame.
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Jean joked that the continuity blunder had led to mass firings on the show.
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Other fans came up with theories as to what might be the reason for the mysterious Maggie photo.
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Other observant fans pointed out that the exact same thing had actually happened before on the show.
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And of course, a fan had the perfect Simpsons reference for the moment.
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But honestly, over the course of 30 seasons, there's bound to be a few slip ups.
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