This hidden Harry Potter detail proves that J.K. Rowling is a genius

She had literally thought of everything

We're forever finding out more and more hidden gems about the Harry Potter universe. Recently we've discovered the significance of Hermione's patronus, that Dean Thomas was previously called something else, as well as the real meaning behind Snape's first words to Harry. What's more, there are endless fan theories swirling around the Internet that make us look at the series in a whole new way.

The latest detail to blow the minds of Potter fans everywhere proves just how smart Hermione really is. She managed to save Harry and Ron many times throughout the seven books, and this little detail is another example of her doing just that.

In book five, The Order of the Phoenix, Harry and Ron are tempted to buy a bottle of Baruffio's Brain Elixir from a sixth year who promises it'll help them perform well in their upcoming O.W.Ls. Before they can finalise the deal, however, Hermione snatches the bottle and pours the contents down the toilet.

You might think that's just Hermione's natural attitude towards cheating in exams, but flash back to the very first book, The Philosopher's Stone, and it looks like there's more to this incident than meets the eye. In their first Charms class ('it's Levi-oh-sah'), Professor Flitwick warns them that Baruffio wasn't to be trusted: 'Never forget Wizard Baruffio, who said 's' instead of 'f' and found himself on the floor with a buffalo on his chest.'

Source: Reddit

No doubt about it, J.K. Rowling is a genius who had Harry Potter planned down to the last tiny detail.

The find is all thanks to Reddit user 'sunshineallday', who posted: 'It's a good thing Hermione confiscated it before you could buy it, Harry.' It's safe to say that you should always trust Hermione Granger.

Source: Tumblr via Giphy

We're impressed: The wizarding world never disappoints. What will we discover next?