The Three-headed Dog incident was like a minor interlude, causing no great stir in Sean's life at Hogwarts.
Professor Flitwick's notes, on the other hand, were of great help to Sean. Though the contents remained vague, traces of knowledge could always be found within that vagueness.
The wand movement for the Water-Making Spell was usually described as "an upward-slanting arc."
In Standard Book of Spells: Grade 1, Miranda Goshawk compared it to "the arc of water flowing from a fountain statue," a vivid and intuitive image well suited for beginners to form a mental picture.
However, in the Book of Spells she wrote later, this description was revised to "the beautiful arc formed when a natural stream strikes a rock."
Regrettably, I have never heard Lady Goshawk publicly explain the specific reason for this revision.
Yet in terms of actual casting results, the latter motion did indeed provide smoother magical guidance and more stable effects—something that has been repeatedly confirmed in my teaching practice.
Therefore, we might infer that this change was not made arbitrarily, but was based on a deeper understanding of the spell.
"I think I understand—"
The languid atmosphere of a Saturday at Hogwarts had not seeped into this owl-guarded classroom.
Early in the morning, two little heads could already be seen huddled together, deeply engrossed in the books spread across the table.
In the corners among the books, steam from three cups of Honey Lemon Tea curled in wisps, blurring two earnest faces.
"Want to try?"
Sean stared at the passage for a long while before speaking to the young witch beside him.
"Of course—Agua-men-ti!"
Hermione confidently swung her wand, its tip tracing a natural arc.
A thin stream of water gushed from the tip of Hermione's wand before splashing onto the floor with a smack.