Hermione Granger is a kick-ass character in the Harry Potter book series. She is smart. She is brave. She grows and changes over the course of the series. She may well be the BRIGHTEST witch of 'our age' in the book.
But in my never humble opinion, she is not the MOST TALENTED witch of 'our age' in the book. That honor belongs to the Weasley twins.
Yes, they got few O.W.L.s. They are not academics. They are brilliant, practical, practicing, perfecting Mages. They created new spells that they used in their products. The spellwork/products took some extensive testing, with some amounts of mistakes made and problems having to be solved.
They were INNOVATORS. They made their own spells. Hermione never did that, never seems to have THOUGHT of doing that. She's great for memorizing what others have worked on, but does not create things herself.
But all those spells Hermione mined from books and teachers were created by someone, at some time.
So what? This is the real world!
Look, I know that most folks out there, even those who say they are on pagan or occult or witch or magical paths are 'armchair occultists' - readers who don't do any actual magic. Of the people who DO actually do any magical or occult work, most just use spells they got from one source or another.
Then there are the folks who create spells. You can be one of those folks.
Over the next week or so I'll start posting on what goes into creating spells, both what I'd say is behind the type of spells in Harry Potter and those that folks like you and I can create.
It's not rocket science. It's .... magic.