As a life-long Harry Potter fan obnoxiously obsessed mega-fan, I'm of the humble opinion that Cursed Child is complete nonsense (in the words of Gilderoy Lockhart: for full details, see my published works). It turns out, J.K. Rowling is on my side, because she accidentally confirmed in one of her Pottermore stories that the entire plot is impossible.

***MASSIVE SPOILERS AHEAD***

To prove my point, here's a refresher on the Cursed Child plot: Because he's a moody teen with poor decision-making skills, Harry's youngest son Albus goes back in time almost 20 years to the Triwizard Tournament to try to stop Cedric Diggory from dying.

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Eventually the Time-Turner sends Albus, his friend Scorpius Malfoy, and Voldemort's (fictional) daughter back almost 40 years to the day Harry's parents were killed. To save the boys, Harry, Ron, Hermione, Ginny, and Draco time travel back to that day, too.

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Okay, so now to the part where none of that makes any sense: Back in September, J.K. released three ebooks, each containing character histories she previously wrote for the Pottermore website. In one of the books, Hogwarts: An Incomplete and Unreliable Guide, she discusses the laws of time travel and uses the research of Professor Saul Croaker, who "has spent his entire career in the Department of Mysteries studying time-magic" to confirm that going back in time further than "a few hours" will result in death.

Hogwarts: An Incomplete and Unreliable Guide

So basically, the entire premise of Harry Potter and the Cursed Child breaks centuries-old wizarding laws and should have killed everyone involved.

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Kelsey Stiegman Senior Style Editor Kelsey is Seventeen.com's fashion expert and resident Harry Potter nerd.

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