The word canon comes from the Greek kanon, meaning rule or standard. It started in religion. The biblical canon is the collection of books accepted as scripture. Everything else is apocrypha. Not necessarily false. Just not official. Not part of the accepted truth.

In fiction, canon means the same thing. It is the body of work that is accepted as the real story. The events that happened. The rules that apply. The truth of the world the author built. Everything outside of canon is fan fiction. It might be entertaining. It might even be good. But it is not the story.

In Harry Potter, canon is simple. Seven books. Written by one person. Beginning to end. Philosopher’s Stone to Deathly Hallows. That is the story. That is the world. Those are the rules.

Then came the Cursed Child.

A play. Not a novel. Not written by Rowling alone but by Jack Thorne, based on a story by Rowling, Thorne, and John Tiffany. Published as a script. Sold as “the eighth story.” JK Rowling stamped it as canon. The publisher called it the official continuation. The West End marketed it as the next chapter.

It is not.

And I say this not because I dislike the play. I say this because the play broke the rules of the world it claims to belong to.

Rowling created the Time-Turner in Prisoner of Azkaban with one rule: you cannot change the past. If you go back, you were always there. Then she destroyed every single Time-Turner in Order of the Phoenix because she knew the device would break her own story. She killed it on purpose.

The Cursed Child brought it back. Changed how it works. Suddenly you can change the past. Suddenly there are alternate timelines. A device the original author destroyed because it was too dangerous was resurrected by someone else and used to do exactly what she was afraid of.

That is not a continuation. That is a contradiction.

And it does not stop there.

Harry Potter, the boy who was raised by the Dursleys for eleven years, who slept under the stairs, who knows what it feels like to be unwanted, tells his son Albus that he sometimes wishes Albus was not his son. Harry Potter. The boy whose entire story is about the damage of being unloved. Says that to his own child. Not in a moment of anger that is immediately regretted. In a scene that is meant to be character development.

And then there is Delphi. Voldemort’s daughter. With Bellatrix Lestrange. Voldemort. The character whose entire identity is defined by his inability to love. Who sees other people as tools. Who cannot form attachments. Had a child. With someone. The plot requires us to believe that the most loveless character in the history of fiction loved enough to create a life.

The fans saw it immediately. The reviews were consistent. It reads like fan fiction. Not the good kind. The kind that does not understand the characters it is writing.

And yet JK Rowling says it is canon.

Here is where I disagree. Not just with the Cursed Child. With the principle.

Canon is not decided by a stamp. It is not decided by a publisher’s marketing team. It is not even decided by the original author when the original author did not write it alone. Canon is earned by consistency. By respecting the rules. By understanding the characters well enough to know what they would and would not do. By honouring what came before.

The Cursed Child does none of that. And the upcoming HBO series, regardless of how good it may be, will face the same question. New actors. New directors. New interpretations. New decisions. And every single one of them will either honour the original seven books or contradict them. I already know which side I will be on.

My canon is seven books. Written by one woman. In one story. Beginning to end.

Because some stories are better left alone.

Not every book needs a sequel. Not every ending needs an extension. Not every world needs to be revisited by someone other than the person who built it. Some stories are complete. They said what they needed to say. They closed when they needed to close. And opening them again, no matter how good the intention, risks turning something sacred into something ordinary.

The seven Harry Potter books are not my childhood. I discovered them with my son. I read them as a father, not as a boy. And maybe that is why I protect them the way I do. Because they are not just a story I grew up with. They are a story I grew into. I protect them the way you protect a pearl inside a shell. Closed. Untouched. Not because the pearl is fragile. Because the pearl is perfect. And every hand that opens the shell, no matter how careful, risks scratching what was already complete.

I do not need an eighth story. I do not need a new cast. I do not need a reimagining. I need the seven books to stay exactly as they are. Protected. Whole. Canon.

Some chapters are better left untouched. And any addition should be ripped and thrown out.