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Jul. 17th, 2008 @ 06:49 pm To infinity and beyond and beyond
Infinity rules in go

Any go rule is generally either universal, or divides rulesets into three groups[1] which play the same in practice: one which ignores it; one which uses a big ban-hammer to make it deterministic, but proponents of the third interpretation think is anaesthetic; and one which defines it terms you can only understand if you already have a good go player's intuition about the game.

1. The "ko" rule This says that you cannot immediately repeat a board position. If black places a stone at a, capturing a white stone at b, white cannot immediately place a stone at b, if this captures the black stone right back again.

This is a venerable part of the game of go, and any alternative interpretation has to be equivalent to it.

Although it would be interesting to see if any of the alternatives would make sense. How would go change if the "ko" rule said that the first player could not repeat the ko position? That would favour a defender rather than an attacker. Or the chess rule allowing a player to claim a draw (or equivalently, letting the ko repeat forever). That would mean the player in the stronger position would be unable to play in the ko.

Superko rule )
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Jul. 17th, 2008 @ 05:49 pm To infinity and beyond
I've spent all day thinking about this now, and not got that far, because go is a game of unsurpassed depth and subtlety, and my head hurts :) In any game where each player acts in turn, and it's possible for a sequence of moves to repeat, the rules have to face the question of what to do if the players get stuck in a loop.

In Magic:TG there are complicated but well-defined set of rules which invite you to compare them to either conceptualised rules "what would happen if you could repeat the sequence infinitely many times" or "what happens if it went on and on, but one player had to break out of the loop eventually". (These are often discussed, eg. on toothywiki.)

In magic the situation is complicated by it sometimes mattering how many times you went round the loop (eg. if you can repeatedly put a new creature into play, can you end up with infinite creatures? Or an arbitrarily large amount?) But it occurred to me, the rules are essentially doing the same job as the ko rule in go or the three-repeats-or-fifty-reversible-moves-is-a-draw rules in chess.

In chess or go, going round the loop multiple times is the same as going round it once, so if you ever break out of the loop, it's the same as doing so at once.

How do the actual rules in place compare to what would happen if you could endlessly repeat?

Chess )
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Jul. 7th, 2008 @ 02:27 am Magic: the Gathering: Prerelease (Alternative title: eaters of lives)
Tags:
There are a few geeky things that float around amongst my friends that I've enjoyed hearing about, but avoided getting sucked into: professional mathematics, World of Warcraft, nethack, database/network administrating, starcraft, chess, etc.

Either because they seem seductive, and would EAT MY LIFE (TM), or because they seem TOO SAD EVEN FOR ME (TM) :)

One of these is Magic: the Gathering, one of the original trading card games. I'm embarrassed there's something really fascinating about it, but there really are many fascinating ideas: a large ruleset you can enjoy hacking if you enjoy that sort of thing, both within and without the intent; pretty pictures cleverly welded to rules design; low effort open-ended socialising.

The point being, there is apparently a prerelease of the next set in Cambridge. So I'm inclined to start doing magic things for a bit, until I get it out of my system. And at a prerelease, obviously (I say with a carefully straight face), is the perfect environment to join, as no-one else knows what the new cards do either :) And with a few cards, I can go along to Alex's sometimes.

Does anyone know Inner Sanctum Collectables? Do I know anyone intending on going?
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Jul. 5th, 2008 @ 02:19 pm Random Media
Tags: , ,
Transformers Movie

This really was a good movie. Funny, and exciting. It does a wonderful job of making transforming robots seem both natural and awe inspiring. The only complaint is that the big robot battles near the end are a bit repetitive when it's hard to see which robot is which.

Spoiler )

"...until we were betrayed by the 'Decepticons'". I think I said this the first time I saw it. Seriously dudes, you didn't see that coming? For the SECOND time?

Erfworld: The Battle for Gobwin Knob

Erfworld is a webcomic by Rob Balder of PartiallyClips and hosted by Rich Burlew along with his Order of the Stick[1]. (Both of those are awesome.) When I first saw it, I was not drawn in: it's inevitably compared to Order of the Stick, but is harder to get into, because it tries to build up an ongoing whole, but this means each strip by itself doesn't necessarily pack as convenient a nugget of humour, while it tries to squeeze plot in. And some people are put off by how gratuitously sexy some of the characters are.

[1] And illustrated by Jamie Noguchi, who I haven't heard of, but draws beautifully. So setting it apart from most other webcomics I like, which start off as crude stick-figures until the author learns to draw better ones[2].

[2] This is gentle irony in the case of most comics, but high praise in the case of OotS, which has really good stick-figures. Really. Really.

However, I just reread through the story, and it is very good. An awful lot of the humour is worked in sideways over a few strips, so when you first see it, it's just odd, and then later on it suddenly dawns on you what atrocious pun you've been reading past, and totally crack up. And the characterisation seemed patchy seeing each strip individually, but when you see the whole, it has half a dozen characters plus who I really, really like. (My favourite is Vinnie Doombats! But also Parson, Lord Stanley, Wanda, Jillian, Bogroll, Sizemore, Misty, Charlie.)

A few other humorous images and links

Simple diagram of the anatomy of an american news story, all the way from "unsubstantiated internet rumour" to "bad movie made for tv about it"
Cat macro
Other movies which can be made cooler by digitally insertinglightsabres!
Kitty pic
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Jun. 27th, 2008 @ 01:43 pm Optical Behaviour of Vampires
This came up in the pub last night, a physical theory for why vampires don't show up in mirrors, and the military applications of it. If you don't know simont, you should be made aware of his write-up: http://simont.livejournal.com/205240.html
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Jun. 26th, 2008 @ 07:24 pm Bisexual kisses
The backstory

http://www.guardian.co.uk/media/2008/jun/24/asa.advertising

Heinz showed an advert where the mother of a family was replaced by a (male) New York deli sandwich maker. At the end, the husband is running of to work, and the sandwich maker says "Hey, aren't you forgetting something" in a humorously New York gruff way, and the husband gives him a little kiss. The digressions )

The point

The advert was removed when several people complained it was inappropriate for kids. (Presumably because it showed a gay kiss, although this wasn't actually stated in the article I read.) (People wishing to complain about that, someone linked to contact details here )

However, it's not showing an actual gay couple. Several people verbalised what was nagging me, atreic: "so I find it very nudge-nudge-wink-wink men kissing that's _funny_, and I'm quite glad the damn thing has been pulled.",

foreverdirt summed it up "If it hadn't been for Heinz's actions, I would be torn between quiet cheer that the ad features a same-sex kiss that isn't treated with disgust, and equally quiet fuming about how sexist and heteronormative the ad is. However, I am much, much more offended by the ad being pulled for featuring a same-sex kiss than I am by the ad itself -- it's not that the ad was a great leap forward, but the reasons that it was pulled are a great leap back."

It's a joke about gay kisses, rather than portraying gay kisses as normal. Which could be nasty, but on reflection, I think can be a positive thing.

It's not a nasty joke. There seems a sequence of societal acceptance that starts with jokes because they show [thing that makes people uncomfortable], and have a good marketing reason for showing it, without being as much of a leap as actually showing [thing] positively would be.

I've often thought this about bisexuality, which seemed to lag a number of years behind gay in getting any tv acceptence. Gay portrayal seems to have gone through the sequence -- there's obviously a long way to go, but I think it started with jokes about gay people, and now there are every so often normal gay characters on TV. TV acceptance of Bi seems to be just starting: it's generally only shown where it's funny. But I think that, counter-intuitively, it is a step on the way to becoming accepted.

Gratuitous quote from Jonathan–Ross-kissing fantasy author[1] )
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Jun. 25th, 2008 @ 04:01 pm Holy Water
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Thesis

I don't think any excuse for the limited supply of holy water could make logical consistent sense within the story. But I've a suggestion for what could fit narratively, a gut rule-of-thumb that predicts whether or not something would fit into the story or not: you can only use holy water blessed for some other purpose.

You could probably go and fill up a few pint bottles from a convenient tap at certain churches, but not conveniently get gallons of the stuff. Is that consistent with how the availability of holy water in vampire novels us usually portrayed? (Not whether that excuse actually applies -- it plainly isn't, oft contradicted if you take it literally. But does it fit thematically, would it fit the facts that there's always some holy water available, but never lots?)

Alternative thesis )
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Jun. 3rd, 2008 @ 09:35 pm Responses to rhetorical questions
Tags:
Q. Why don't they make the whole plane out of the stuff they make the black box out of?
A. It would be too heavy to fly.

Q. Why do they have brail on drive-up ATMs?
A. So passengers can use them For very far-sighted drivers Because ATMs are mass-produced, and the machinery to customise them is more expensive than the saving of not using

Q. When Buffy the Vampire Slayer is fighting a vampire, why does she karate it a lot first, before sticking a stake in its heart? Why doesn't she do that first?
A. Humans are equally vulnerable as vampires to being stuck with stakes. Imagine a knife-fight. Is a good strategy to stab someone immediately? Well, yes, if possible, but they may be able to block. Buffy can have a stake to hand, implicitly presenting a threat, but have to wait for an actual opening before she can use it.

Q. When Giles the Vampire Watcher is researching a demon, why does he leaf through pages and pages of books? Isn't there an index?
A. There is, but it's indexed by name, and if you've just seen a demon, Giles may only have a partial memory of what book it's in, and Xander none at all. It's actually the same with many real-world academics. If you want to look up something, and already know what it's called (eg. "integration by blah"), you can find lots of information, but if you only have a hint about what is relevant (eg. "I want to integrate [this]"), you have to experiment to find out what technique is useful. If you're an expert, and have a good description of the problem, you're likely to find it at once, but otherwise, you may have to put some work into defining the problem first.

Q. Well, why don't they scan them into a computer and index them by physical characteristics?
A. It makes sense. They tried that in season #1, and accidentally released Moloch onto the internet. I think this put them off.

Q. Well, why don't they type them in?
A. They did get round to that eventually, but it was never 100% reliable, on account of being typed by different people.

Q. A fishmonger has a sign saying "FRESH FISH SOLD HERE TODAY". Why is "sold" necessary? Isn't that implicit[1]?
Q. Why is "here" necessary? Isn't that implicit?
Q. Why is "today" necessary? Isn't that implicit?
Q. Why is "fish" necessary? Isn't that implicit?
Q. Why is "fresh" necessary? Isn't that implicit?

A1. Yes, some shops do sell non-fresh fish. Either fish that's been caught a day ago, or frozen, or whatever's slightly worse than whatever this one sells.
A2. It's advertising. We know the fish is fresh, but saying so reminds us, and associates the idea with this shop.
A3. Once you said "fresh", removing the sign carries a worse implication never having it there in the first place didn't.
A4. Yes, in fact, all the words are redundant ("fish" is actually most redundant, assuming fish are displayed, "fresh" least), but putting up an empty sign, or a sign saying "mu", needs a footnote to explain the whole reasoning process, since English often has some redundant words in a sentence, but doesn't make sense if you remove all of them, but fish-mongers often have an intuitive understanding of how English works, without having studied it in detail.

OTOH, perhaps a sign saying "mu" would be a big attraction! I'd go there (if I wanted fresh fish) :)

A semi-serious question would be the first two and last five questions are traditionally part of a joke. But is there any more specific reason why they're funny? It's funny because making a plane out of black-box is superficially reasonable, when the only thing you know about black-box is that it's relatively impervious to plane crashes, but it's not actually reasonable for the reasons stated. But if it were obviously a good idea, or obviously a bad idea, it wouldn't be funny.

[1] This comes from an old joke, where one or successive passers-by note the successive redundancies, and the fishmonger removes the words one at a time, ending with the word "fish", which the passer-by then says is compeltely redundant.
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dragon/caligraphy
May. 13th, 2008 @ 12:08 pm Democratic primaries
Wait, what?

I know I shouldn't bother about American elections, there being politics I'm so much more relevant for elsewhere. But as I understand it: the Democrat (and republican) party has primaries (ie. like a general election within all x-ist voters to decide the X-ist candidate for the presidential election).

Four states primaries happen first, before Feb 5, then all the others. This year, a couple of states, notably Michigan, rebelled and held their primary earlier, the democratic convention chose to ignore them, and most candidates removed themselves from the ballot.

Remaining were Hilary Clinton, and a couple of others. Now Clinton[1] says the convention should count that election after all. [Edit: or some people do, not sure if she said that herself.]

* Why are the four states that are voted on first voted on first? Is there a good reason or is it just tradition?

* How did Michigan and the convention manage that snafu?

* How by any stretch of the imagination could you count that election?

Even if you accept that Clinton would have come ahead in it, you can have no idea by how much. That 60% of people voted for Clinton instead of not doesn't tell you anything. The exit poll has Clinton beating Obama 46% to 35% and that's only of people who actually turned up to vote, and she voted and he didn't. And you can't base a result on an exit poll. No result other than an implausible revote could reenfranchise Michigan, so the only argument is which flawed result to take. But since the purpose of the primary is to produce a popular presidential election candidate, surely the fact that Obama is more popular with any likely Michigan result is more important than how the primary was run?

[1] It's pleasantly surreal reading old wikipedia pages which refer to Bill Clinton as "Clinton". Style guides successfully made the switch to "Clinton" being by default Hilary. Though now I wonder, were there no examples of this confusion before? No couples (or other people with the same name) equally prominent? I don't remember ever any ambiguity.
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May. 6th, 2008 @ 12:41 am Review: DVDs and Videos
Tags:
DVD:

No need to rewind
Easy skip ahead
Menus to view different options non-linearly
Subtitles
Small storage space

Video:

Built-in ability to skip stupid intros, piracy ads, menus, etc
Low hassle recording
Cheap
No stupid bonus features
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May. 2nd, 2008 @ 05:02 pm Degrees of X-ist-ness follow-up
In the last post, I suggested a hierarchy of being pro-X.

1. Thinking that X.
2. Thinking that X needs campaigning for.
3. Actively doing something about that
4. That being a defining feature of yourself
5. Thinking that X is one of few most important issues in society.

It seems many people felt (5) was extremely wrong, I'm not quite sure how to phrase it differently. There's a continuum from thinking X is true/good and I'm an X-ist, to X is overwhelmingly important. Almost any cause has extremists, and they have to go somewhere on the scale, and they go in (5), but (5) also includes people who justifiably believe in the overwhelming importance of X.

Agh. Look behind you, a distracting Richard Dawkins! )
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happy/hannukah
Apr. 9th, 2008 @ 07:43 pm What is usenet for databases?
Tags: , ,
Recently my "books lent and borrowed" list ballooned by 100% or more, and it occurred to me how useful this would be if it were stored in a simple database, so "Jack, friend, lent/borrowed, book" would automatically contribute to friend's list as well. (You might make a few tweaks on a server large enough that everyone doesn't automatically trust each other such as recording if both people have approved the entry.) And if it's returned, either of us can check it off.

Obviously someone used to web programming could knock up something that works in a simple way in an evening if they put their mind to it (though I'm rather rusty myself).

However, this is obviously limited by server. Someone would write it and host it on chiark, or other server, and invite people to use it, but if someone elsewhere did the same thing, you'd have to have an account on both if you had friends on both. (Which isn't a big deal for _this_, but I'm curious, and would be great for many applications, maybe even social networking ones.)

What is the most obvious way of letting the two (or many) servers cooperate? Tim described this as "usenet for databases". Mobbsy said the nearest thing that sprang to mind was DNS, which do trade information back and forth. You might find the bandwidth wasn't even that high -- eg. many web apps send email alerts anyway, so the extra hit of sending the data to another server mightn't be so much extra.

footnotes )
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haylp/wacky races
Apr. 8th, 2008 @ 01:39 am Science fiction vs. Fantasy
One of the thoughts from Eastercon was an (inevitable) panel on the difference between Science Fiction and Fantasy. The panel didn't actually get very far, as it stalled on a big argument between Weston, who argued so vehemently for science fiction being about rationalistic extrapolation of science that everything else got caught in the cross-fire, but it raised lots of interesting ideas.

It's one of the ideas I've been mulling around in my head since. I've yet to come to any decisions, but preliminarily started considering a list of *potential* ways genres are defined.

Read more... )
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books/Sarpadian Empires (cropped)
Mar. 26th, 2008 @ 07:04 pm Gender neutral pronouns
I'm sure you all know the history of Gender neutral pronouns. And most think the question is mostly settled, although not agree in favour of what :)

However, it occurs to me some reluctance might come from the fact that although I have a little voice in my head saying "Women and men are the same. Gender neutral is good" I have a great big klaxon blaring "ALL INFORMATION IS GOOD! LEARN THINGS! BE INFORMED! COMMUNICATE FULLY! INF. ORM. ATION. GOOD." :)

That is, apart from not being aesthetically fond of most of the choices of gender-neutral pronouns, I'm not fond that that word choice is deliberately less informative. If you're talking about a genuinely neutral (eg. hypothetical) or ambiguous person, or you don't know, there's no information lost, but I still only use the pronouns where I have good reason.

But today a friend made another reference to the concept of "Geek as gender" and something occurred to me so obvious I couldn't believe it hadn't before.

What if we had two or more pronouns that drew *different* demarcations? We already have special pronouns for royalty and gods. ("Her Royal Highness's" etc and "His" etc).

You could adopt the archaic second-person model and have "te" (pronounced with a long e), "tis" and "ter" and "ve", "vis" and "ver" for intimate acquaintances and others. Or for social acquiantances and work acquaintances.

Or have different pronouns for different groups people can adopt as whatever they feel like identifying as in a certain concept. (Of course, you shouldn't identify solely as one thing, but most people are happy to identify as one thing but others as well.) Perhaps two sets would be most common ("he" and "she" or some other division), but that someone would borrow the Sindarin or Quenya pronouns from Tolkien and use them when affectionately referring to people from the Tolkien society.

Of course, now we near the Chinese problem of having too many, and having to decide when meeting someone whether to use the very formal or the extremely formal version of their pronoun.

But on the other hand, it seems more positive, as choosing to use such a pronoun doesn't sound like "my gender isn't important to me" but "this other aspect of our acquaintance is more important". And if you have a good reason to use other pronouns, it's not so jarring when someone does.

I'm afraid I haven't thought this out in detail, but I thought it was a lovely idea.
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Feb. 27th, 2008 @ 10:25 am (no subject)
Tags: ,
Something like earthquake posts (along with sprawling moral debates) is something where something between lj and news would be a useful interface.

Would it not be most useful if the first earthquake appeared on your friends-list (and was assigned a unique message id), but people could choose to post follow-ups (citing that id) that appeared as posts on the friends-lists of friends who hadn't seen the original, but as comments on that post for people who know both people?

Then everyone sees an "I felt an earthquake" post, with a list of comments, rather than at least one post per overlapping friends group. And, if a post has an ongoing discussion thread in response, you could de-tag it and make it standalone again.
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Feb. 22nd, 2008 @ 12:10 am Apologies
I mentioned this in passing a couple of times, but in retrospect it was indeed difficult to get the point out of my successively nested parenthetical asides.

"Sorry" can mean two different things, sympathy or apology. But my way of viewing it was as a continuum, something like

1. Pure sympathy, with no apology.
2. You accept causation but no culpability. You regret that you inadvertently and unavoidably hurt someone, and wish you hadn't, but don't regret any of your actions. Eg. You're driving responsibly and someone chooses to step out a few feet ahead of your car. You feel awful, and the way you apologise is a lot more than a bystander would, but doesn't mean you think it was your fault, but does mean you feel a greater responsibility for causing it (either because that's how we're wired or because *often* if you cause something it's at least partly your fault).
3. You admit carelessness but not specific expectation to harm. If you were acting unthinkingly, and think you really shouldn't have been, but that you didn't deliberately harm them either, you were just more careless than you should be. Eg. if you repeatedly fail to remember to do something. You might feel legitimately apologetic, but not in the same way as if you'd deliberately harmed them.
4. You admit selfishness, you deliberately hurt someone because it got you something. Eg. you stole from them.
5. You admit malice, you deliberately hurt someone because you wanted to hurt them (although you might claim diminished responsibility, eg. if you bullied them but were too young to completely understand).

So most have some sympathy, depending how serious they are. And the last three have apology. But there are intermediate stages. (Eg. if you express sympathy because something bad happened to someone (1), you might also feel bad because you were better off than them in that way which is actually also like (2), in that your good fortune may make them feel worse, even though you couldn't have prevented that. And at some point between 3 and 4 deliberate and persistent carelessness becomes a complete disregard for someone.)

And I sometimes feel that while almost all of the time people know what sort of apology someone is actually talking about, sometimes this gets horribly distorted. For instance, in culture A it might be normal, if you knock into someone in the street, to apologise in the sense (2). But in culture B that might be interpreted as (3), and give the other person grounds to sue you.

Or you might try to offer sympathy to someone for something you've done, but get tongue tied explaining how you don't feel guilty, etc. And you normally can explain, but having the different ideas in your mind may make it easier to do so quickly and simply.
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Nov. 7th, 2007 @ 12:30 pm Mutations
Minor spoilers for Heroes (and X-men) )
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Oct. 25th, 2007 @ 03:26 pm (no subject)
I'm intelligent, have a good job, have written a couple of short computer games and short stories, and had several affairs with ladies I highly respect. What I'm saying is that, before you read on, remember I was released into society.

Today I corrected my clock (on my mobile telephone) back four minutes. And then I looked at it to see what the time was.

On the other hand, this weekend, I took my laptop home from work and on Monday I brought it back again! It's like being some kind of walking competence machine :)
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Oct. 24th, 2007 @ 01:51 pm What is the least sexual form of undead?
One of my friends likes Zombies. Too much. Though not necessarily like that. I was going to say Zombies were the least palatable form of undead ever, but then realised I hadn't yet considered the question in detail.

Vampires 5/5

Vampires are generally considered "where it's at" with regard to sexual undead. Laurel K. Hamilton, the authority on metaphysics justifying soft-core vampire porn, certainly endorses this view in the Anita Blake series.

It's not always the case, but as far back as the original Dracula novel there was a connection between blood-drinking and sex, and vampires were under the right conditions very suave and debonair. (In fact, AB had the interesting proposal that legends of vampires were based on occurrences, and vampire politics caused a shift in the prevalent form of vampires from dead-like to sexual.)

The modern trend for Vampires as another urban subculture supports the view even more.

Werewolves: 5/5

Read more... )
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Oct. 22nd, 2007 @ 12:26 pm To what extent are authors interpretations of their own works relevent?
To what extent do you think authors interpretations of their own works relevent? Do authorial statements count as canon (facts within the work). Unsurprisingly, I'm going to take a middle line.

I think the authors conceptions when writing the book are relevant, and probably count as canon. If they intended so-and-so to have this reason for doing things, it's polite and probably most accurate and informative to think so when you read it. Things will probably make most sense when you assume this background.

But that what they say doesn't *necessarily* reflect what they were thinking. As annoying as it is for an author to be deconstructed, sometimes the right interpretations may lie in assumptions never consciously adopted (eg. the author's morality informs the book's morality), or conceptions at the time later changed (eg. uh, no, the Ender's Shadow prequels were totally canon, honest), or even, potentially, things the author deliberately lies about (eg. no, no, I'm not misogynist and racist, it's art).

Of course, there's still room to interpret the book in different ways -- people do this even when something's clear from the book itself as well as authorial pronouncements.

For that matter, much the same argument applies to small points of continuity (here you said "three days", but there you said...) as large background motivations (so, all the way through, there's this unrequited...) Sometime it's best for the author to just come clean and say "whoops, it doesn't work, just pretend it does, ok?". That's not wonderful, but mistakes happens, and it's better than trying to patch it up later in even more confusing ways.

Of course, this leads to the unpalatable conclusion that consistency may not be the be all and end all of fiction sometimes consistency has to be set aside. If the author intends so-and-so to have this motivation, but half the time forgets and gives them that motivation instead, and then admits it when we deconstruct the book -- you may find both intertwined halves of the book are great with the motivation intended at the time, but there's no consistent interpretation that makes sense all the way through.

Do you have to accept an author's pronouncements? I don't think so. They probably (assuming you decide they're accurate) represent an improvement, but if the book is what you have the book is what you read.
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