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017.lyx
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#LyX 2.1 created this file. For more info see http://www.lyx.org/
\lyxformat 474
\begin_document
\begin_header
\textclass memoir
\use_default_options true
\master hpmor_volume1_16x23.lyx
\begin_modules
initials
\end_modules
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\end_header
\begin_body
\begin_layout Chapter
Locating the Hypothesis
\end_layout
\begin_layout Initial
\begin_inset Argument 2
status open
\begin_layout Plain Layout
T
\end_layout
\end_inset
\begin_inset Argument 3
status open
\begin_layout Plain Layout
hursday.
\end_layout
\end_inset
\begin_inset Newline newline
\end_inset
If you wanted to be specific, 7:24
\begin_inset space \thinspace{}
\end_inset
am on Thursday morning.
\end_layout
\begin_layout Standard
Harry was sitting on his bed, a textbook lying limp in his motionless hands.
\end_layout
\begin_layout Standard
Harry had just had an idea for a
\emph on
truly brilliant
\emph default
experimental test.
\end_layout
\begin_layout Standard
It would mean waiting an extra hour for breakfast, but that was why he had
cereal bars.
No, this idea absolutely positively had to be tested right away, immediately,
now.
\end_layout
\begin_layout Standard
Harry set the textbook aside, leapt out of bed, raced around his bed, yanked
out the cavern level of his trunk, ran down the stairs, and started moving
boxes of books around.
(He really needed to unpack and get bookcases at some point but he was
in the middle of his textbook reading contest with Hermione and falling
behind so he hadn't had time.)
\end_layout
\begin_layout Standard
Harry found the book he wanted and raced back upstairs.
\end_layout
\begin_layout Standard
The other boys were getting ready to go down to breakfast in the Great Hall
and start the day.
\end_layout
\begin_layout Standard
“Excuse me can you do something for me?” said Harry.
He was flipping through the book's index as he spoke, found the page with
the first ten thousand primes, flipped to that page, and thrust the book
at Anthony Goldstein.
“Pick two three-digit numbers from this list.
Don't tell me what they are.
Just multiply them together and tell me the product.
Oh, and can you do the calculation twice to double-check? Please make really
sure you've got the right answer, I'm not sure what's going to happen to
me or the universe if you make a multiplication error.”
\end_layout
\begin_layout Standard
It said a lot about what life in that dorm had been like over the past few
days that Anthony didn't even bother saying anything like “Why'd you suddenly
flip out?” or “That seems really weird, what are your reasons for asking?”
or “What do you mean, you're not sure what's going to happen to the universe?”
\end_layout
\begin_layout Standard
Anthony wordlessly accepted the book and took out a parchment and quill.
Harry spun around and shut his eyes, making sure not to see anything, dancing
back and forth and bouncing up and down with impatience.
He got a pad of paper and a mechanical pencil and got ready to write.
\end_layout
\begin_layout Standard
“Okay,” Anthony said, “One hundred and eighty-one thousand, four hundred
and twenty-nine.”
\end_layout
\begin_layout Standard
Harry wrote down 181,429.
He repeated what he'd just written down, and Anthony confirmed it.
\end_layout
\begin_layout Standard
Then Harry raced back down into the cavern level of his trunk, glanced at
his watch (the watch said 4:28 which meant 7:28) and then shut his eyes.
\end_layout
\begin_layout Standard
Around thirty seconds later, Harry heard the sound of steps, followed by
the sound of the cavern level of the trunk sliding shut.
(Harry wasn't worried about suffocating.
An automatic Air-Freshening Charm was part of what you got if you were
willing to buy a really good trunk.
Wasn't magic wonderful, it didn't have to worry about electric bills.)
\end_layout
\begin_layout Standard
And when Harry opened his eyes, he saw just what he'd been hoping to see,
a folded piece of paper left on the floor, the gift of his future self.
\end_layout
\begin_layout Standard
Call that piece of paper “Paper-2”.
\end_layout
\begin_layout Standard
Harry tore a piece of paper off his pad.
\end_layout
\begin_layout Standard
Call that “Paper-1”.
It was, of course, the same piece of paper.
You could even see, if you looked closely, that the ragged edges matched.
\end_layout
\begin_layout Standard
Harry reviewed in his mind the algorithm that he would follow.
\end_layout
\begin_layout Standard
If Harry opened up Paper-2 and it was blank, then he would write “101 x
101” down on Paper-1, fold it up, study for an hour, go back in time, drop
off Paper-1 (which would thereby become Paper-2), and head on up out of
the cavern level to join his dorm mates for breakfast.
\end_layout
\begin_layout Standard
If Harry opened up Paper-2 and it had two numbers written on it, Harry would
multiply those numbers together.
\end_layout
\begin_layout Standard
If their product equaled 181,429, Harry would write down those two numbers
on Paper-1 and send Paper-1 back in time.
\end_layout
\begin_layout Standard
Otherwise Harry would add 2 to the number on the right and write down the
new pair of numbers on Paper-1.
Unless that made the number on the right greater than 997, in which case
Harry would add 2 to the number on the left and write down 101 on the right.
\end_layout
\begin_layout Standard
And if Paper-2 said 997 x 997, Harry would leave Paper-1 blank.
\end_layout
\begin_layout Standard
Which meant that the only possible
\emph on
stable
\emph default
time loop was the one in which Paper-2 contained the two prime factors
of 181,429.
\end_layout
\begin_layout Standard
If this worked, Harry could use it to recover any sort of answer that was
easy to check but hard to find.
He wouldn't have
\emph on
just
\emph default
shown that P=NP once you had a Time-Turner, this trick was
\emph on
more general
\emph default
than that.
Harry could use it to find the combinations on combination locks, or passwords
of every sort.
Maybe even find the entrance to Slytherin's Chamber of Secrets, if Harry
could figure out some systematic way of describing all the locations in
Hogwarts.
It would be an awesome cheat even by Harry's standards of cheating.
\end_layout
\begin_layout Standard
Harry took Paper-2 in his trembling hand, and unfolded it.
\end_layout
\begin_layout Standard
Paper-2 said in slightly shaky handwriting:
\end_layout
\begin_layout Standard
DO NOT MESS WITH TIME
\end_layout
\begin_layout Standard
Harry wrote down “DO NOT MESS WITH TIME” on Paper-1 in slightly shaky handwritin
g, folded it neatly, and resolved not to do any more truly brilliant experiments
on Time until he was at least fifteen years old.
\end_layout
\begin_layout Standard
To the best of Harry's knowledge, that had been the scariest experimental
result in the entire history of science.
\end_layout
\begin_layout Standard
It had been somewhat difficult for Harry to focus on reading his textbook
for the next hour.
\end_layout
\begin_layout Standard
That was how Harry's Thursday started.
\end_layout
\begin_layout Quote
\align center
\begin_inset Graphics
filename fleur.png
scale 50
\end_inset
\end_layout
\begin_layout Standard
Thursday.
\end_layout
\begin_layout Standard
If you wanted to be specific, 3:32pm on Thursday afternoon.
\end_layout
\begin_layout Standard
Harry and all the other boys in the first year were outside on a grassy
field with Madam Hooch, standing next to the Hogwarts supply of broomsticks.
The girls would be learning to fly separately.
Apparently, for some reason, girls didn't want to learn how to fly on broomstic
ks in the presence of boys.
\end_layout
\begin_layout Standard
Harry had been a little wobbly all day long.
He just couldn't seem to stop wondering how that
\emph on
particular
\emph default
stable time loop had been selected out of what was, in retrospect, a rather
large space of possibilities.
\end_layout
\begin_layout Standard
Also: seriously,
\emph on
broomsticks?
\emph default
He was going to fly on, basically, a line segment? Wasn't that pretty much
the single most unstable shape you could possibly find, short of attempting
to hold on to a point marble? Who'd selected
\emph on
that
\emph default
design for a flying device, out of all the possibilities? Harry had been
hoping that it was just a figure of speech, but no, they were standing
in front of what looked for all the world like ordinary wooden kitchen
broomsticks.
Had someone just gotten stuck on the idea of broomsticks and failed to
consider anything else? It had to be.
There was no way that the
\emph on
optimal
\emph default
designs for cleaning kitchens and flying would happen to coincide if you
worked them out from scratch.
\end_layout
\begin_layout Standard
It was a clear day with a bright blue sky and a brilliant sun that was just
begging to get in your eyes and make it impossible to see, if you were
trying to fly around the sky.
The ground was nice and dry, smelling positively baked, and somehow felt
very, very hard under Harry's shoes.
\end_layout
\begin_layout Standard
Harry kept reminding himself that the lowest common denominator of elev\SpecialChar \-
en-year-o
lds was expected to learn this and it couldn't be that hard.
\end_layout
\begin_layout Standard
“Stick out your right hand over the broom, or left hand if you're left-handed,”
called Madam Hooch.
“And say, UP!”
\end_layout
\begin_layout Standard
“UP!” everyone shouted.
\end_layout
\begin_layout Standard
The broomstick leapt eagerly into Harry's hand.
\end_layout
\begin_layout Standard
Which put him at the head of the class, for once.
Apparently saying “UP!” was a lot more difficult than it looked, and most
of the broomsticks were rolling around on the ground or trying to inch
away from their would-be riders.
\end_layout
\begin_layout Standard
(Of course Harry would have bet money that Hermione had done at least as
well when it came her own turn to try, earlier in the day.
There couldn't possibly be anything
\emph on
he
\emph default
could master on the first try which would baffle Hermione, and if there
\emph on
was
\emph default
and it turned out to be
\emph on
broomstick riding
\emph default
instead of anything intellectual, Harry would just die.)
\end_layout
\begin_layout Standard
It took a while for everyone to get a broomstick in front of them.
Madam Hooch showed them how to mount and then walked around the field,
correcting grips and stances.
Apparently even among the few children who'd been allowed to fly at home,
they hadn't been taught to do it correctly.
\end_layout
\begin_layout Standard
Madam Hooch surveyed the field of boys, and nodded.
“Now, when I blow my whistle, you kick off from the ground, hard.”
\end_layout
\begin_layout Standard
Harry swallowed hard, trying to quell the queasy feeling in his stomach.
\end_layout
\begin_layout Standard
“Keep your brooms steady, rise a few feet, and then come straight back down
by leaning forwards slightly.
On my whistle
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
three
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
two
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
”
\end_layout
\begin_layout Standard
One of the brooms shot skyward, accompanied by a young boy's screams
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
of horror, not delight.
The boy was spinning at an awful rate as he ascended, they only got glimpses
of his white face
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
\end_layout
\begin_layout Standard
As though in slow motion, Harry was leaping back off his own broomstick
and scrabbling for his wand, though he didn't really know what he planned
to do with it, he'd had exactly two sessions of Charms and the last one
\emph on
had
\emph default
been the Hover Charm but Harry had only been able to cast the spell successfull
y one time out of three and he certainly couldn't levitate whole people
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
\end_layout
\begin_layout Standard
\emph on
If there is any hidden power in me, let it reveal itself NOW!
\end_layout
\begin_layout Standard
“Come back, boy!” shouted Madam Hooch (which had to be the most unhelpful
instruction imaginable for dealing with an out-of-control broomstick, from
a
\emph on
flying instructor
\emph default
, and a fully automatic section of Harry's brain added Madam Hooch to his
tally of fools).
\end_layout
\begin_layout Standard
And the boy was thrown off the broomstick.
\end_layout
\begin_layout Standard
He seemed to move very slowly through the air, at first.
\end_layout
\begin_layout Standard
“
\emph on
Wingardium Leviosa!
\emph default
” screamed Harry.
\end_layout
\begin_layout Standard
The spell failed.
He could feel it fail.
\end_layout
\begin_layout Standard
There was a THUD and a distant cracking sound, and the boy lay facedown
on the grass in a heap.
\end_layout
\begin_layout Standard
Harry sheathed his wand and raced forwards at full speed.
He arrived at the boy's side at the same time as Madam Hooch, and Harry
reached into his pouch and tried to recall oh god what was the name never
mind he'd just try “Healer's Pack!” and it popped up into his hand and
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
\end_layout
\begin_layout Standard
“Broken wrist,” Madam Hooch said.
“Calm down, boy, he just has a broken wrist!”
\end_layout
\begin_layout Standard
There was a sort of mental lurch as Harry's mind snapped out of Panic Mode.
\end_layout
\begin_layout Standard
The Emergency Healing Pack Plus lay open in front of him, and there was
a syringe of liquid fire in Harry's hand, which would have kept the boy's
brain oxygenated if he'd managed to snap his neck.
\end_layout
\begin_layout Standard
“Ah…” Harry said in a rather wavering sort of voice.
His heart was pounding so loudly that he almost couldn't hear himself panting
for breath.
“Broken bone… right… Setting String?”
\end_layout
\begin_layout Standard
“That's for emergencies only,” snapped Madam Hooch.
“Put it away, he's fine.” She leaned over the boy, offering him a hand.
“Come on, boy, it's all right, up you get!”
\end_layout
\begin_layout Standard
“You're not seriously going to make him ride the broomstick again?” Harry
said in horror.
\end_layout
\begin_layout Standard
Madam Hooch sent Harry a glare.
“Of course not!” She pulled the boy to his feet using his good arm
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
Harry saw with a shock that it was Neville Longbottom
\emph on
again,
\emph default
what was
\emph on
with
\emph default
him?
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
and she turned to all the watching children.
“None of you is to move while I take this boy to the hospital wing! You
leave those brooms where they are or you'll be out of Hogwarts before you
can say `Quidditch.' Come on, dear.”
\end_layout
\begin_layout Standard
And Madam Hooch walked off with Neville, who was clutching his wrist and
trying to control his sniffles.
\end_layout
\begin_layout Standard
When they were out of earshot, one of the Slytherins started giggling.
\end_layout
\begin_layout Standard
That set off the others.
\end_layout
\begin_layout Standard
Harry turned and looked at them.
It seemed like a good time to memorise some faces.
\end_layout
\begin_layout Standard
And Harry saw that Draco was strolling towards him, accompanied by Mr.
\begin_inset ERT
status open
\begin_layout Plain Layout
\backslash
\end_layout
\end_inset
Crabbe and Mr.
\begin_inset ERT
status open
\begin_layout Plain Layout
\backslash
\end_layout
\end_inset
Goyle.
Mr.
\begin_inset ERT
status open
\begin_layout Plain Layout
\backslash
\end_layout
\end_inset
Crabbe wasn't smiling.
Mr.
\begin_inset ERT
status open
\begin_layout Plain Layout
\backslash
\end_layout
\end_inset
Goyle decidedly was.
Draco himself was wearing a very controlled face that twitched occasionally,
from which Harry inferred that Draco thought it was hilarious but saw no
political advantage to be gained by laughing about it now instead of in
the Slytherin dungeons afterwards.
\end_layout
\begin_layout Standard
“Well, Potter,” Draco said in a low voice that didn't carry, still with
that very controlled face that was twitching occasionally, “Just wanted
to say, when you take advantage of emergencies to demonstrate leadership,
you want to look like you're in total control of the situation, rather
than, say, going into a complete panic.” Mr.
\begin_inset ERT
status open
\begin_layout Plain Layout
\backslash
\end_layout
\end_inset
Goyle giggled, and Draco shot him a quelling look.
“But you probably scored a few points anyway.
You need any help stowing that healer's kit?”
\end_layout
\begin_layout Standard
Harry turned to look at the Healing Pack, which got his own face turned
away from Draco.
“I think I'm fine,” Harry said.
He put the syringe back in its place, redid the latches, and stood up.
\end_layout
\begin_layout Standard
Ernie Macmillan arrived just as Harry was feeding the pack back into his
mokeskin pouch.
\end_layout
\begin_layout Standard
“Thank you, Harry Potter, on behalf of Hufflepuff,” Ernie Macmillan said
formally.
“It was a good try and a good thought.”
\end_layout
\begin_layout Standard
“A good thought indeed,” drawled Draco.
“Why didn't anyone in Hufflepuff have their wands out? Maybe if you'd
\emph on
all
\emph default
helped instead of just Potter, you could've caught him.
I thought Hufflepuffs were supposed to stick together?”
\end_layout
\begin_layout Standard
Ernie looked like he was torn between getting angry and wanting to die of
shame.
“We didn't think of it in time
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
”
\end_layout
\begin_layout Standard
“Ah,” said Draco, “didn't
\emph on
think
\emph default
of it, I guess that's why it's better to have one Ravenclaw as a friend
than all of Hufflepuff.”
\end_layout
\begin_layout Standard
Oh, hell, how was Harry supposed to juggle this one… “You're not helping,”
Harry said in a mild tone.
Hoping Draco would interpret that as
\emph on
you're interfering with my plans, please shut up.
\end_layout
\begin_layout Standard
“Hey, what's this?” said Mr.
\begin_inset ERT
status open
\begin_layout Plain Layout
\backslash
\end_layout
\end_inset
Goyle.
He stooped to the grass and picked up something around the size of a large
marble, a glass ball that seemed to be filled with a swirling white mist.
\end_layout
\begin_layout Standard
Ernie blinked.
“Neville's Remembrall!”
\end_layout
\begin_layout Standard
“What's a Remembrall?” asked Harry.
\end_layout
\begin_layout Standard
“It turns red if you've forgotten something,” Ernie said.
“It doesn't tell you what you forgot, though.
Give it here, please, and I'll hand it back to Neville later.” Ernie held
out his hand.
\end_layout
\begin_layout Standard
A sudden grin flashed across Mr.
\begin_inset ERT
status open
\begin_layout Plain Layout
\backslash
\end_layout
\end_inset
Goyle's face and he spun around and raced away.
\end_layout
\begin_layout Standard
Ernie stood still for a moment in surprise, and then shouted “Hey!” and
ran after Mr.
\begin_inset ERT
status open
\begin_layout Plain Layout
\backslash
\end_layout
\end_inset
Goyle.
\end_layout
\begin_layout Standard
And Mr.
\begin_inset ERT
status open
\begin_layout Plain Layout
\backslash
\end_layout
\end_inset
Goyle grabbed a broomstick, hopped on with one smooth motion and took to
the air.
\end_layout
\begin_layout Standard
Harry's jaw dropped.
Hadn't Madam Hooch said that would get him
\emph on
expelled?
\end_layout
\begin_layout Standard
\emph on
“That idiot!
\emph default
” Draco hissed.
He opened his mouth to shout
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
\end_layout
\begin_layout Standard
“
\emph on
Hey!
\emph default
” shouted Ernie.
“That's Neville's!
\emph on
Give it back!
\emph default
”
\end_layout
\begin_layout Standard
The Slytherins started cheering and hooting.
\end_layout
\begin_layout Standard
Draco's mouth snapped shut.
Harry caught the sudden look of indecision on his face.
\end_layout
\begin_layout Standard
“Draco,” Harry said in a low tone, “if you don't order that idiot back on
the ground, the teacher's going to get back and
\begin_inset ERT
status open
\begin_layout Plain Layout
--
\end_layout
\end_inset
”
\end_layout
\begin_layout Standard
“
\emph on
Come and get it, Hufflepuffle!
\emph default
” shouted Mr.
\begin_inset ERT
status open