旧工作服放到桌上时，Clay 闻到洗衣皂的味道。
When the old work coat was laid on the table, Clay smelled laundry soap.
七年前，他把它丢在值班室背后的椅子上，以为第二天会拿。后来要带走的东西太多，有人帮他收行李，衣服留在了镇上。葬礼准备时，它被重新洗过，袖口的破洞没有补，仿佛那也是一个必须原样保留的证据。
Seven years ago, he had left it on the chair behind the duty room, expecting to collect it the next day. Later, there had been too much to take. Someone helped pack his luggage, and the coat stayed in town. It had been washed for the funeral. The hole in its cuff remained, as though that too were evidence to preserve exactly.
鸭嘴兽将它展开，露出领口后面两行褪色的小字。
The platypus spread it out, revealing two faded lines behind the collar.
别拿来擦玻璃。
Don’t use this to clean windows.
第二行是另一个人的字：已经擦了。
The second, in another hand: Already did.
Clay 看着它，忽然想起埃利那天故意把衣服藏到工具箱底下，怕诺拉发现自己又拿别人的衣服当抹布。那是一件很小的事，和灯网、事故、续期都没有关系。可他记得埃利憋不住笑的样子，记得自己最后只能穿着有油印的衬衣走回家。
Looking at it, Clay suddenly remembered Eli deliberately hiding the coat beneath a toolbox so Nora would not discover he had used someone else’s clothing as a rag again. A tiny thing, unrelated to the light network, the accident, or renewals. Yet Clay remembered Eli struggling not to laugh, and walking home in an oil-stained shirt himself.
他将衣服翻到里面。
He turned the coat inside out.
暗袋缝在左侧腰间，开口朝下，用一颗扁铜扣压住。里层原来是油布，洗过以后边缘起毛，中间仍有一点硬。Clay 解开扣子，取出三张折得很小的蜡纸，一块薄铜片和半截已经干透的橡皮筋。
The hidden pocket was sewn at the left waist, opening downward beneath a flat brass button. Its lining had been oilcloth. Washing had frayed the edges, but the center remained stiff. Clay undid the button and removed three tightly folded sheets of waxed paper, a thin copper plate, and half a dried-out rubber band.
最外面那张几乎看不清字，里面两张还好。上面是他当年每次试灯记下的数值，最后一栏写着同一个代号，C-17。
The outermost sheet was nearly illegible; the inner two had survived better. They held his readings from each lamp trial. The last column always carried the same code: C-17.
铜片上也刻着它。
It was engraved on the copper plate too.
Dr. T 把红封册放到桌子另一端。
Dr. T set the red-bound ledger at the other end of the table.
这回没有先拿出节选。册子很厚，边上用不同颜色的小签分年，最近几页的纸明显更新。鸭嘴兽核对柜位和目录，把提供时间写到昨天的承诺下面，再把那张纸推给 Clay。
This time he did not begin with extracts. The volume was thick, its years divided by colored tabs, the latest pages visibly newer. The platypus checked its cabinet location against the catalog, noted the delivery time beneath yesterday’s promise, and pushed that sheet toward Clay.
Clay 没看承诺，只翻开最后一页。
Clay ignored the promise and turned to the last page.
他自己的代号在最上方。
His own code stood at the top.
后街分区恢复，镇历星期四上午。下方一列是位置，一列是参照变化，一列是释放或损失的联系。具体人物用另一组编号表示，但诺拉同意查阅自己的记录，她的名字已经由鸭嘴兽补写在对应编号旁。
Back-street sector restoration, Thursday morning by the town calendar. Below were columns for location, changes in reference, and connections released or lost. People were represented by another set of numbers, but Nora had consented to inspection of her records. The platypus had added her name beside the relevant code.
她坐在桌边，围裙没有解，手指上还粘着一点干面粉。
She sat at the table, apron still on, a little dried flour clinging to her fingers.
“这是我？”她问。
“That’s me?” she asked.
Dr. T 点头。
Dr. T nodded.
“这些是什么？”
“What are these?”
她指向那串看不懂的符号。
She pointed to the unreadable symbols.
Dr. T 把册子转向她，没有马上解释灯镜。他先问她是否记得星期四上午倒茶前的事情。诺拉说记得，接着不耐烦地抬头。
Dr. T turned the ledger toward her. Instead of explaining the lenses, he first asked whether she remembered Thursday morning before pouring the tea. Nora said yes, then looked up impatiently.
“我已经答过很多次。你现在答我。”
“I’ve answered that enough times. Now you answer me.”
“是你和 Clay 之间的一部分共同经历。”
“They’re part of the experience you and Clay shared.”
诺拉的手停在纸上。
Nora’s hand stopped on the page.
Dr. T 继续说：“不是记录这些经历的纸。是你经历它们时，把他当成与你有关的那个人的联系。”
“Not the papers recording those experiences,” Dr. T continued. “The connection that made him someone who mattered to you while you lived them.”
Clay 看向衣服里的蜡纸，再看红册。
Clay looked from the waxed sheets in the coat to the red ledger.
C-17。
C-17.
七年里从来没有换过。
Unchanged for seven years.
“它用的始终是我。”他说。
“It’s been using me all along,” he said.
“是。”
“Yes.”
屋里只听见伊沃呼吸。他被安排坐在能把左腿伸直的椅子上，左臂重新包扎过，袖子剪开了。照护员原先让他休息，他坚持来，岚把一张矮凳移到他脚下，才让他坐稳。
Only Ivo’s breathing was audible. They had found him a chair where he could extend his left leg. His left forearm had fresh bandages, the sleeve cut open. The caregiver had told him to rest, but he insisted on coming. Lan had moved a low stool under his foot before letting him settle.
Dr. T 将红册翻到最初那一年。
Dr. T opened the ledger to its first year.
事故后，镇内的路、房屋和外面的位置不再自然对应。最早的灯用 Clay 对这里的熟悉作为一条临时参照：他认识谁住哪间房，记得桥过去是什么，知道雾钟从哪个方向传来。灯沿着这些共同经历把松动的地方重新拉住。
After the accident, roads and houses inside the town no longer naturally corresponded to positions outside. The first lights used Clay’s familiarity as a temporary reference: he knew who lived where, what lay across the bridge, which direction the fog bell sounded from. The lights followed those shared experiences to hold the loosening places together.
“那时候，变化还小。”Dr. T 说，“我们以为只要等外侧稳定，就能换回外部参照。”
“The changes were small then,” Dr. T said. “We thought we only had to wait for the outside to stabilize before returning to external references.”
“后来没有。”Clay 说。
“But you didn’t,” Clay said.
“没有。镇里仍在变化，旧参照却越来越难把这些变化接进去。”
“No. The town kept changing, and the old reference found it increasingly difficult to take those changes in.”
他用两张透明薄片叠在一起。一张是七年前的后街，一张是最近的。新窗、移位的炉子、长大的树，从原先的轮廓里伸出来。强行对齐时，总有一部分不肯落到同一个地方。
He overlapped two transparencies, one showing the back street seven years ago, the other now. New windows, a moved oven, grown trees extended beyond the original outlines. Forced into alignment, some portion always refused to occupy the same place.
“修复会把旧联系里无法承受差异的部分拿掉，让地方先接回去。”
“Restoration removes the parts of the old connections that can’t bear the differences, so the place can reconnect first.”
诺拉看着两张图。
Nora watched the diagrams.
“所以炉子还在，店还在，我不记得他了。”
“So the oven stays. The shop stays. I don’t remember him.”
Dr. T 没把那句话改得更温和。
Dr. T did not soften her words.
“是。”
“Yes.”
Clay 想起手提灯亮起来后，送货人还能摸到自己的腿。他当时只看到路回来了。诺拉站起来笑，随后去拿杯子，那段短短的时间里，另一件东西已经被拿走，他却还在看接头有没有发热。
Clay remembered the deliveryman feeling his legs after the light came on. All Clay had seen was the road returning. Nora had stood, laughed, then gone for a cup. In that short interval, something else had been taken, while he was still checking the connector for heat.
“每次恢复一整块，都会这样？”
“Every full-sector restoration does this?”
“旧灯网里的恢复会结算积下来的差异。不是每一次开普通灯，也不是每次维修都发生。严重到后街这种程度，已经无法靠很小的调整抹平。”
“Restoration through the old network settles accumulated differences. It doesn’t happen every time an ordinary lamp is switched on, or with every repair. Damage as severe as the back street can no longer be smoothed out with minor adjustments.”
“你说结算。”诺拉说。
“You say ‘settles,’” Nora said.
她把那两个字念得很慢。
She pronounced the word slowly.
Dr. T 低头，像想换一个词，最后没有。
Dr. T lowered his eyes as if to find another term, but did not.
“这个词不会让它轻一些。”
“The word doesn’t make it lighter.”
“我知道。”她说，“我要知道你们究竟拿走了多少。”
“I know,” she said. “I want to know how much you’ve taken.”
红册里有她能确认的几次变化，也有还没来得及访谈的空格。鸭嘴兽将她自己的记录复制给她，没有替她补上不记得的那些事。她收起来，放到围裙口袋，过了一会儿又取出来，折得更小，像怕丢了。
The ledger contained several changes she could confirm and blank spaces for interviews not yet held. The platypus copied her records for her without filling in what she could not remember. She put them in her apron pocket, then took them out and folded them smaller, as though afraid of losing them.
伊沃指向另一页，那是早年的双观察口试验。
Ivo pointed to an earlier page: a trial with two observation ports.
“黑槽。”他说。
“The black slot,” he said.
Dr. T 点头。
Dr. T nodded.
当年确实试过两个人同时维持一段地方。第一位看到的旧街与第二位看到的新街不一致，装置将差别当成需要纠正的错误，最终仍回到它最熟悉的单一参照。校准片保留了那个旧指向，即使供电断开，也会在某些光位下重新接通。
They had indeed tried having two people sustain one place. The first saw an old street, the second a new one. The apparatus treated the difference as an error to correct and ultimately returned to its most familiar single reference. The calibration insert retained that old direction. Even with power cut, certain angles of light could reconnect it.
“所以今天我们看见的过去，是它拉回去的。”岚说。
“So the past we saw today was what it pulled us back toward,” Lan said.
“很可能。”
“Very likely.”
“我们需要可以主动割断那条旧联系的办法。”
“We need a way to deliberately sever that old connection.”
Dr. T 没立即说不行。
Dr. T did not immediately say it was impossible.
“需要。还需要一个不会跟着主塔一起漂移的外部方向。只靠镇内两个人，可能仍在同一张错位的图里比较。”
“We do. And an external direction that won’t drift with the main tower. Two people inside the town may still be comparing views on the same displaced map.”
岚从文件袋里取出天气纸带，放到桌上。伊沃又把船长的方向图推过去。
Lan laid the weather strip on the table. Ivo pushed the captain’s directional sketch toward him too.
Dr. T 看着它们，目光停得比之前久。
Dr. T studied them longer than before.
“这些有价值。”他说。
“These matter,” he said.
Clay 没让谈话就这样转到新的装置上。
Clay did not let the conversation move straight to a new apparatus.
“先说旧的还欠多少。”
“First tell us what the old one still owes.”
他翻到册子最后。在后街记录下面，还有几行已经标出但尚未完成的变化，涉及码头、东坡及主灯。右侧画着一条不断收窄的曲线，终点靠近下一周的大潮。
He turned to the ledger’s end. Beneath the back-street entry were several marked but incomplete changes involving the harbor, east slope, and main lamp. On the right, a narrowing curve ended near the following week’s high tide.
Dr. T 说，主灯如今既在维持镇子，也在寻找能够替代原参照的来源。Clay 返镇后，它认出了起始见证者，所以光束停在他身上。那不是灯塔欢迎旧主人，是旧装置找到了仍可调用的那一端。
Dr. T said the main lamp was both sustaining the town and searching for a replacement reference. When Clay returned, it recognized the original witness; that was why the beam stopped on him. It was not a lighthouse welcoming its old keeper. It was an old apparatus finding an endpoint it could still call upon.
Clay 抬头看窗外。
Clay looked out of the window.
从这里看不到码头，只有一片明亮的海面。他却记起那束光跟着自己抬高的感觉，记起人们看向他的神情。他当时既害怕，又有一瞬间觉得，至少灯还记得他。
He could not see the harbor, only bright sea. Yet he remembered the feeling of the beam rising to follow him, the way everyone looked. He had been frightened, but for an instant had thought: at least the light remembers me.
“它想把剩下的也接回去。”他说。
“It wants to reconnect the rest too,” he said.
“是。”
“Yes.”
“然后呢？”
“And then?”
Dr. T 没再翻页。
Dr. T stopped turning pages.
“继续用同一条参照，会越来越少。最后一次完全重接，可能使镇上关于你的旧关系全部断开。即使这样，旧方式也只能再撑一段，不能让镇子永远不变。”
“Keep using the same reference, and less and less remains. One final full reconnection could sever every old relationship to you in town. Even then, the old method would only buy more time. It cannot keep the town unchanged forever.”
伊沃问撑多久，Dr. T 说无法保证，潮位、外侧路径和缺口大小都会影响。所有现有测量都指向同一个危险期：D7 黎明前后，不能再等待。
Ivo asked how much time. Dr. T could not promise: tide level, outside routes, and the size of the gaps would all matter. Every current measurement pointed to the same danger period: around dawn on D7. They could wait no longer than that.
“换新的呢？”Clay 问。
“And if we replace it?” Clay asked.
“旧账不会因为换了装置就消失。要把它彻底解开，仍要完成最后的释放。已经失去的部分也不会回来。”
“Changing the apparatus won’t erase the old debt. Fully undoing it still requires the final release. What’s already lost won’t return.”
诺拉看向 Clay。他没有看她。
Nora looked at Clay. He did not look at her.
他问了另一件事：“这几天新发生的呢？”
He asked another question. “What about what’s happened over these last few days?”
Dr. T 的目光落在她的围裙口袋。
Dr. T’s gaze settled on her apron pocket.
“旧灯每夜会把当天新增的关系并进已有参照。你们今天还记得的，不代表以后都不会碰到。最初几小时没被纳入的，常常能够留下；往后的，不一定。”
“Each night the old light folds the day’s new relationships into the existing reference. Remembering them today doesn’t mean they’ll never be touched. The earliest hours, before incorporation, can often remain. Afterward, there’s no certainty.”
Clay 想到那句狗的不要钱，想到伊沃把第二份测量纸撕给自己，想到岚自己在门上钉名字。原来他刚刚学会怎样重新认识别人，那些新形成的东西，也已经在这本册子将来的空白里等着。
Clay thought of “the dog eats free,” of Ivo tearing off the second measurement copy for him, of Lan nailing her own name to the door. He had only just learned how to know people again. Already those new connections waited in the future blank pages of this ledger.
“纸还会在。”鸭嘴兽说。
“The paper will remain,” the platypus said.
没人因此放心。
Nobody found comfort in that.
“纸会告诉他们我做过什么。”Clay 说，“但不会让他们知道我坐到这张桌子前是什么感觉。”
“Paper will tell them what I did,” Clay said. “It won’t tell them what it felt like when I sat down at this table.”
鸭嘴兽的手按住记事本，点了点头。
The platypus pressed a hand to his notebook and nodded.
诺拉突然站起来。椅子腿在地上刮出一声响。
Nora suddenly stood. Her chair scraped the floor.
“我出去一下。”
“I need to step out.”
她没有等别人回应，走到门外。Clay 听见她在走廊里停住，没有下楼。过了一会儿，她又进来，端着一壶水，给每个人倒了一杯。
Without waiting for an answer, she left. Clay heard her stop in the corridor rather than go downstairs. After a while she returned with a jug of water and poured a cup for everyone.
她给 Clay 倒时，拿的是一只带糖渍的旧杯，随即发现，换了一只干净的。
For Clay, she first picked an old cup stained with sugar, noticed, and exchanged it for a clean one.
“这个我今天还记得。”她说。
“I still remember that today,” she said.
Clay 接过杯子，手稳了几次才放到桌上。
Clay accepted it. He had to steady his hand several times before setting it on the table.
Dr. T 站起身，打开红册后面的夹层。里面有一页新方案，最上面写着替代参照。岚看见那个标题，伸手按住自己的检查袋。
Dr. T stood and opened the compartment behind the ledger’s back cover. Inside was a new proposal headed REPLACEMENT REFERENCE. Seeing the title, Lan pressed a hand to her examination wallet.
“还有一个可能。”他说。
“There’s another possibility,” he said.
Clay 没让他接着讲。
Clay stopped him before he continued.
“今天听到这些，不只是我一个人的事。所有可能失去东西的人，都得知道。”
“What we’ve heard today isn’t only about me. Everyone who could lose something needs to know.”
“一下公开，会让人以为每开一盏灯都会忘人。”
“Announce it all at once, and people will think every light makes them forget someone.”
“那就讲清楚区别。”伊沃说。
“Then explain the difference,” Ivo said.
Dr. T 看了他一眼，最终没有反对。他答应提供能公开核验的记录，鸭嘴兽负责整理，涉及私人的原话由当事人自行决定是否呈现。
Dr. T glanced at him and finally did not object. He agreed to supply records that could be publicly checked. The platypus would organize them; each person would decide whether their private words could be shown.
这一次鸭嘴兽写下了不同意也要保留。他写完停了一会儿，又把那一行抄到第一页。
This time the platypus wrote: Objections must be retained too. He paused, then copied the line onto the first page.
离开房间前，Clay 将旧工作服折好。暗袋中的三张蜡纸和铜片分别装入纸袋，衣服不再回到棺材里。
Before leaving, Clay folded the old coat. He put its three waxed sheets and the copper plate into separate paper envelopes. The coat would not return to the coffin.
他提着它走到门口，Dr. T 在身后叫住他。
As he carried it to the door, Dr. T called after him.
“你还可以不承担最后一次。”
“You can still choose not to bear the final release.”
Clay 没回头。
Clay did not turn.
“那谁承担？”
“Then who does?”
屋里没有立即响起回答。
No answer came immediately.
他在那段沉默里听见岚把检查袋扣上的声音。
In the silence, he heard Lan fasten her examination wallet.