As I recently explained, retcons have existed in comic book storytelling for numerous decades . It's a device that has allowed new creative teams to take pre-established characters in new directions without necessitating an entire remake or reboot of continuity. In other words, it's a narrative shortcut. It's also a signal for new readers to jump onboard an ongoing title, a device which allows them to learn the essentials of what they need to know and get up to speed as quickly as possible.

After the Marvel Cinematic Universe successfully adapted the way comic book characters function on the page — having the ability to weave in and out of solo and group stories — it was only a matter of time before other comic book narrative devices showed up. It just so happens that James Gunn, writer/

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