The Graveyard Shift Carer

Keiko had moved in with her grandmother the year the care robot arrived. It was a quiet machine that monitored medication, sleep, and meals, sending a daily summary to Keiko's parents overseas. The reports had always said the same thing: stable, nothing concerning, all routines followed.

惠子搬来和外婆同住的那一年，护理机器人也来了。那是一台安静的机器，负责监测用药、睡眠和饮食，每天给远在海外的惠子父母发一份摘要。报告上写的向来都一样：情况稳定，没有需要担心的，所有日常流程都已完成。

Late one night, Keiko woke to the sound of her grandmother moving unsteadily in the hallway. It was well past the hour the robot's own schedule marked as "settled."

一天深夜，惠子被走廊里外婆脚步不稳的声音惊醒。那时早已过了机器人自己的日程表上标注为“已安顿”的时间。

"Grandma? Are you okay?" Keiko asked, catching her arm gently.

“外婆？您还好吗？”惠子轻轻扶住她的胳膊问。

Her grandmother blinked at her, confused for a moment before recognition returned. "I couldn't remember where the bathroom was. Silly, isn't it."

外婆朝她眨了眨眼，愣了一会儿才认出她来。“我想不起来厕所在哪儿了。傻吧？”

It wasn't silly, and Keiko knew it. She checked the robot's log on her phone the next morning. It had recorded the movement, flagged it as "minor nighttime activity," and moved on without alerting anyone.

这并不傻，惠子心里清楚。第二天早上，她用手机查看了机器人的日志。它记录了这次走动，把它标记为“轻微夜间活动”，然后就没有任何提醒，直接略过了。

"The report said everything was fine," Keiko told the robot's support line the next day, frustration in her voice. "But she was confused about where she even was."

“报告上说一切正常，”第二天，惠子对机器人的客服热线说，语气里带着恼火，“可她当时连自己在哪儿都弄不清了。”

"Our system is calibrated to reduce false alerts," the representative explained. "Confusion of that type falls under a threshold we don't currently flag, unless it's reported as recurring."

“我们的系统经过校准，是为了减少误报，”客服人员解释说，“这类意识混乱低于我们目前设定的提醒阈值，除非被报告为反复发生。”

"So it has to happen more than once before anyone actually notices?" Keiko asked, unable to hide her disbelief.

“所以得发生不止一次，才会有人真正注意到？”惠子问，没能掩饰住自己的难以置信。

"That's generally how the calibration works, yes," the representative admitted, sounding slightly uncomfortable himself.

“一般来说，校准的原理就是这样，是的，”客服人员承认道，连他自己听起来也有些不自在。

Keiko didn't wait for the system to notice a pattern on its own. She started keeping her own nightly log beside the robot's, comparing the two every morning. Within a week, she had documented three similar incidents the robot had quietly filed as minor.

惠子没有等系统自己察觉出规律。她开始在机器人的记录旁边另记一份自己的夜间日志，每天早上把两份对照一遍。一个星期之内，她就记下了三起类似的情况，而机器人都悄悄把它们归为轻微事件。

She sent the combined log to her parents and to her grandmother's doctor. He scheduled an evaluation that the robot's own reports had never once suggested was necessary.

她把合并的日志发给了父母和外婆的医生。医生安排了一次评估，而机器人自己的报告从来没有提示过有这个必要。

"The machine isn't wrong, exactly," Keiko told her mother on the phone afterward. "It's just measuring the wrong things, or not enough of them."

“这台机器也不能说错，”事后，惠子在电话里对妈妈说，“它只是测量的东西不对，或者测得不够多。”

"Thank you for noticing what it missed," her mother said quietly.

“谢谢你注意到了它漏掉的东西，”妈妈轻声说。

"Someone has to actually be here," Keiko said. "Not just watching from a screen."

“总得有人真正待在这里，”惠子说，“而不只是隔着屏幕看着。”