Khác biệt giữa bản sửa đổi của “Muggles' Guide to Harry Potter/Magic/Underage Sorcery”

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→‎Analysis: - added Hagrid's use of magic (with an illegal wand) to give Dudley a tail.
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One must wonder, though, about the Trace's accuracy. There is no apparent notice when Aunt Marge's glass magically shatters, or the cabinet under the stairs magically unlocks as Harry leaves [[Muggles' Guide to Harry Potter/Places/Privet Drive|Privet Drive]]. There is no apparent notice when magic occurs in Harry's vicinity when he stays at [[Muggles' Guide to Harry Potter/Places/The Burrow|the Burrow]], [[Muggles' Guide to Harry Potter/Places/Grimmauld Place|Grimmauld Place]], or in [[Muggles' Guide to Harry Potter/Places/Diagon Alley|Diagon Alley]]. There is no notice of the magic occurring in his vicinity when he is being visited by [[Muggles' Guide to Harry Potter/Characters/Arthur Weasley|Arthur Weasley]], the Advance Guard, or [[Muggles' Guide to Harry Potter/Characters/Albus Dumbledore|Professor Dumbledore]] at Privet Drive, or when [[Muggles' Guide to Harry Potter/Characters/Rubeus Hagrid|Hagrid]] is taking him off the island and back to shore in [[Muggles' Guide to Harry Potter/Books/Philosopher's Stone|the first book]]. Additionally, the Trace did not trigger when Harry was casting spells to try and revive Dumbledore in the cavern, or Apparate him back to Hogwarts, in [[Muggles' Guide to Harry Potter/Books/Half-Blood Prince/Chapter 26|''Harry Potter and the Half-Blood Prince'']], or when he was using defensive magic against Death Eaters in ''Harry Potter and the Deathly Hallows''. If we assume that the Trace can detect an adult wizard, and damp its responses accordingly, then the only unexplained situations are the shattering wineglass and the opening cupboard during Aunt Marge's stay at Privet Drive, and possibly the summoning of the [[Muggles' Guide to Harry Potter/Magic/Knight Bus|Knight Bus]]. Those, along with Aunt Marge's inflation, might have been lumped together and forgiven by Cornelius Fudge. The defensive magic use against Death Eaters may be something of an anomaly; Hagrid presumably had been reinstated as a legal wizard by that time, so his close proximity to Harry might have damped the Trace's response, but we suspect, due to the Trace not triggering when Hagrid returned himself and Harry to the shore in the first book, that Hagrid was detected as an adult wizard by the Trace even if his use of magic had supposedly been proscribed. The presence of other, mature wizards, namely the attacking Death Eaters, might also have served to quiet the Trace in the later instance. It is also possible that [[Muggles' Guide to Harry Potter/Characters/Rufus Scrimgeour|Rufus Scrimgeour]] may be trying to cover up the scale of the Death Eater attack, so as to not reveal how powerful [[Muggles' Guide to Harry Potter/Characters/Lord Voldemort|Voldemort]] has become.
 
However, it is also true that the Ministry does not seem to be aware of Harry's use of magic before he turns eleven and gets his wand. In the first chapters of ''Harry Potter and the Philosopher's Stone'', Harry unknowingly shrinks a horrible sweater down to doll-size so that he won't have to wear it, flies to a rooftop to avoid a beating from [[Muggles' Guide to Harry Potter/Characters/Dudley Dursley|Dudley]] and his gang, regrows his hair overnight, and makes the glass vanish from a snake's cage. He isn't even punished when Hagrid uses an illegal wand to curse a Muggle (Dudley's pig tail). However, there are no warnings issued by the Ministry during this time. Possibly the Trace is only activated when the child reaches the age of 11 and is assumed to be consciously able to direct his or her magic. Could the law also prevent selling or giving wands to children under the age of 11?
 
This still leaves issues with the Trace remaining quiescent when the Twins and Ron are in Arthur's flying car, when Harry joins them, and when Harry and Ron are flying the car to Hogwarts. Certainly the car is a magical artifact, and so the Trace should be active, but none of the underage wizards involved in that escapade receive warnings. Another writer, in another series (Randall Garrett, in the ''Lord Darcy'' series), has drawn a distinction between active and passive magic, saying that possessing or using a charmed object is significantly different than actively creating a new spell. It is probably necessary that this same distinction be built into the Trace, as the number of charmed objects in the ordinary Wizarding household that would be used by a child is quite extensive — an infant banging on a self-stirring cauldron with a spoon, for instance, could be considered someone using a magical object. If this distinction was not made by the Trace itself, the Ministry would be overwhelmed with reports of magical objects being used by underage wizards.