The Resistance | Think Like A Coder, Ep 2

翻译人员: Carol Wang 校对人员: Yanyan Hong

[ 像程序员一样思考 ]

[ 地点：监狱、BRADBARRIER ]

[ 第二集 反抗 ]

After breaking Ethic out of prison,

海吉从狱中救出艾斯克之后，

Hedge flies them both towards a frontier settlement

就带着她飞往长城脚下的 一个边境定居点，

in the shadow of the Bradbarrier, the great wall that encircles the nation.

布莱德霸长城绕国土而建。

All the settlers there will soon gather for the monthly feeding.

那里的人们很快就要聚集 参加每月的喂食活动。

The people of the wall spend their days gathering up works of art and literature,

长城脚下的人花了大量时间

从全国收集艺术和文学作品。

from all across the land.

On feeding day, the furnace-bots arrive, ravenous.

喂食那天炉膛机器人抵达，饥饿如狼。

If they eat, the lights stay on, and the food gets delivered.

如果机器人吃东西，炉膛灯才会亮， 给人的食物就会被送出来。

If they starve, the people do too.

如果它们挨饿，人们就没吃的。

Hedge’s fuel supply runs out just as he and Ethic reach the outskirts of town,

他俩抵达城郊时， 海吉的燃料刚好用尽，

and they come in for a crash landing.

他们只好紧急着陆。

Luckily, everyone is too busy preparing for the feeding to notice.

幸运的是，所有人忙于准备喂食， 没有人注意到他俩。

Today’s feeding is where Ethic can find the leader

在今天的喂食现场，

艾斯克能找到在暗中的反抗领袖，

of an underground resistance movement.

This person knows the location of the first of three powerful artifacts.

此人知道三个强大物件中 第一个的位置。

The problem is, Hedge and Ethic don’t know

问题是，海吉和艾斯克

the resistance leader’s name or appearance.

不知道抵抗领袖的名字或长相。

But Hedge has gathered the following information:

但海吉搜集到领袖的相关信息：

The leader has green eyes.

他的眼睛是绿色的；

If the leader has red hair, their name has at least one consecutive double letter.

如果他长着红头发， 名字至少两个连续字母相同；

If the leader wear glasses, their name has exactly 2 vowels.

如果戴眼镜的话， 名字中则有且仅有 2 个元音；

Otherwise, their name has exactly 3 vowels.

否则，名字中会有 3 个元音；

There is exactly one person for whom these are all true.

只有 1 人 符合以上条件。

As a fugitive,

艾斯克作为逃犯，

Ethic can’t sneak into the crowd without drawing attention to herself.

难以潜入人群而不引人注意，

But she can give instructions to Hedge.

但她可以给海吉下达指令。

And one tool she has is what programmers call a conditional.

她有个程序员称为条件语句的工具，

That’s a statement of the form “If A, then B.”

使用形式是：“If A， then B”。

Flowcharts are great illustrations of how those work.

流程图可很好展现其工作原理，

This conditional translates to: if A is true, carry out instruction B.

这个条件语句可翻译为：

如果 A 真，则执行 B 指令。

There are also conditionals that account for different possibilities.

条件语句也可描述不同的可能，

This says, “If A is true, perform instruction B.

如这句：“如果 A 是真的， 则执行 B 指令；

否则，执行 C 指令。”

Otherwise, carry out instruction C.”

So what instructions does she give Hedge so he can find the resistance leader?

艾斯克给海吉下达什么指令， 才能让它找到抵抗领袖呢？

Pause now to figure it out for yourself.

[ 提示倒计时 3 ]

[ 提示倒计时 2 ]

[ 提示倒计时 1 ]

With a problem like this, it can help to simplify first.

碰到类似问题， 先简化会帮助解答。

What if Hedge just has to examine this one person?

要是海吉必须先检查这个人呢？

What information does he need to collect about her?

他需要收集关于她的哪些信息？

He might ask, “Does she have green eyes?”

他可能会问：“她眼睛是绿色吗？”

What other questions should Hedge ask to find the resistance leader,

海吉要找到抵抗领袖， 还应该问其它什么问题？

and how can he track those answers?

以及如何追踪这些答案呢？

Pause now to figure it out for yourself.

[ 若想自行解题，可按暂停 ]

[ 答案公布倒计时 3 ]

[ 答案公布倒计时 2 ]

[ 答案公布倒计时 1 ]

It may seem intuitive how you’d approach this problem as a human.

作为人类，你可能觉得 处理这个问题很直观，

But Hedge isn’t a human,

但是，海吉不是人类，

and so the challenge comes from needing to give him systematic instructions

因此，你面临的挑战是 需要给它系统化指令，

that will work in any scenario.

这些指令能处理任何情况。

Hedge needs to examine the settlers, one at a time,

海吉需挨个查看住在那里的人，

until he discovers the right person.

直到找到符合条件的人。

In other words, like with the lock on the prison cell,

换句话说，就像解开牢房锁一样，

this is a loop that repeats the same instructions.

这是一个重复相同指令的循环。

Only this time the loop will involve a series of questions

只是这一次的循环指令

是一系列问题的条件语句形式，

in the form of conditionals,

and will end as soon as Hedge finds his target.

一旦海吉找到目标， 会立即结束循环。

But first, you’ll want to organize your information.

但是首先，你需要整理信息。

Each person has a set of characteristics: Eye color, hair color, glasses, and name.

每个人都有一组特征： 眼睛和头发颜色、眼镜和名字。

Does this person have green eyes?

这人的眼睛是绿色吗？

If so, mark a check next to “eye color." If not, mark an X there.

如果是，请在“眼睛颜色”旁打勾； 否则，请在此处标记 X 。

If they have red hair, does their name contain a double letter?

如果他们是红色头发， 名字里有两个连续字母相同吗？

If so, mark a check next to “hair color.”

如果是，请在“头发颜色”旁打勾；

If they don’t have a double letter, mark an X next to “hair color.”

否则，在“头发颜色”旁标 X 。

Anyone with red hair and no double letter can’t be the resistance leader.

红头发但名字里没有双字母的人， 都不可能是抵抗运动领袖。

But notice that if they have blue hair,

但是请注意，如果是蓝头发，

Hedge will skip this question and go on to the next one.

海吉将跳过此问题， 继续查看下一个人。

For the last question, we can say,

最后一个问题，我们可以这样问：

“If they wear glasses, does their name have exactly 2 vowels?

“如果他们戴眼镜， 名字中有且仅有 2 个元音吗？

If they don’t have glasses, does their name have exactly 3 vowels?”

如果没戴眼镜， 名字是否有且仅有 3 个元音？”

There will be people in the crowd with glasses and 1 vowel,

人群中戴眼镜 和名字有 1 个元音的人，

or no glasses and 2 vowels.

或没戴眼镜 和名字有 2 个元音的人，

But they’re not who we’re looking for, so they’ll get X’s.

但他们不是我们的目标， 所以，把他们标记为 X 。

The resistance leader must be someone with either check marks

抵抗运动领袖一定是 每个问题旁打勾的人

or blanks next to every question.

或问题旁空白 并有待进一步检验的人。

Blanks are ok, because if someone has blue hair,

空白是可能的，

因为如果某人是蓝头发， 那么就与红色头发的规则相左。

the rule about red hair doesn’t apply to them.

You could have Hedge ask every question about every person,

你可以让海吉询问每人所有问题，

and then choose the person with only checks and blanks.

然后仅选择打勾和空白的人。

But there’s a way to save yourself lots of time: as soon as Hedge marks an X,

但有一种方法可以节省大量时间：

一旦海吉对此人标 X 后， 立即让它转到下一个人。

have him move on to the next person.

You don’t need to know the answer to every question;

你无需知道每个问题的答案，

just one X means they’re not the target of your search.

一个 X 就说明他们不是目标。

Hedge buzzes through the crowd,

海吉在人群中飞来飞去，

and within minutes finds Adila, the resistance leader,

几分钟内就找到了 抵抗运动领袖阿迪拉，

and brings her back to Ethic.

并将她带回艾斯克处。

Adila agrees to help them steal the first artifact— the node of power—

她愿意帮忙偷第一件物品—— 权力的节点——

but under one condition:

但有一个条件：

艾斯克和海吉要对镇压小镇的 炉膛机器人重新编程，

that Ethic and Hedge jump-start the revolution

by reprogramming the furnace-bots that terrorize the town.

来发动这场革命。

And right on cue, the robots descend.

话音刚落，炉膛机器人就到了。