I just realized why some spells were causing Harry dread, apprehension, and anxiety in chapter 104. It’s not because Professor Sprout is controlled by Professor Quirrell (which she is), since other spells of hers fail to trigger the effect and yet one of Tonk’s spells does. It’s because Quirell is using metamagic to influence the outcome of the battle! He empower’s Sprout’s brown bolt so that it tears through Professor Snape’s shield, and he quickens her stunner so that Snape can’t dodge. Then he empowers Tonk’s spell to ensure that she will take out Sprout.
In retrospect, this makes perfect sense. There are too many people involved, and combat is inherently chaotic; there is simply no way Quirrell can predict exactly how the fight will go. But he can be there, using gentle nudges to actively steer it towards the small region in outcome-space that ranks high in his utility function, and hope that Harry Potter is too distracted by the battle to notice (which he was; his deduction that Quirrell is behind the plot never once mentions this fact). As a bonus, this explains how Sprout can defeat Snape, when normally we wouldn’t expect her to stand a chance.
The entire point of that whole battle is to encourage Harry to commit his hidden resources (Lesath under the Cloak). The whole brawl is basically a show put on for Harry’s benefit. Since Quirrell controls the time of Harry’s coming to the scene, he could easily take out Snape himself and move him out of the way earlier. He didn’t need to bring Sprout or manipulate others to come.
Since Quirrell neglected to ask Harry in Parseltongue whether he still has hidden resources Quirrell doesn’t know about, it’s still just about possible that Cedric Diggory, Time-Turned, is following them under the second Cloak. I hope he does.
I just realized why some spells were causing Harry dread, apprehension, and anxiety in chapter 104. It’s not because Professor Sprout is controlled by Professor Quirrell (which she is), since other spells of hers fail to trigger the effect and yet one of Tonk’s spells does. It’s because Quirell is using metamagic to influence the outcome of the battle! He empower’s Sprout’s brown bolt so that it tears through Professor Snape’s shield, and he quickens her stunner so that Snape can’t dodge. Then he empowers Tonk’s spell to ensure that she will take out Sprout.
In retrospect, this makes perfect sense. There are too many people involved, and combat is inherently chaotic; there is simply no way Quirrell can predict exactly how the fight will go. But he can be there, using gentle nudges to actively steer it towards the small region in outcome-space that ranks high in his utility function, and hope that Harry Potter is too distracted by the battle to notice (which he was; his deduction that Quirrell is behind the plot never once mentions this fact). As a bonus, this explains how Sprout can defeat Snape, when normally we wouldn’t expect her to stand a chance.
The entire point of that whole battle is to encourage Harry to commit his hidden resources (Lesath under the Cloak). The whole brawl is basically a show put on for Harry’s benefit. Since Quirrell controls the time of Harry’s coming to the scene, he could easily take out Snape himself and move him out of the way earlier. He didn’t need to bring Sprout or manipulate others to come.
Since Quirrell neglected to ask Harry in Parseltongue whether he still has hidden resources Quirrell doesn’t know about, it’s still just about possible that Cedric Diggory, Time-Turned, is following them under the second Cloak. I hope he does.