I've been reading Kazuo Ishiguro's latest novel Klara and the Sun. It stimulated thoughts about sentience, which is a subject that interests me.
Klara is an AF. An Artificial Friend. A machine with the appearance of a human; in Klara's case, a human female ["you look kind of French", Josie said]. An android. The narrator of the story.
But really, Klara is an observer. Of human behaviour and, in her reactions to that behaviour, we move closer to an answer to the question: Is Klara sentient?
The story begins with Klara on display in an AF store, being examined by prospective purchasers. She spends her time, with her fellow AF Rosa, observing people and happenings in the street that she can see through the store's window:
"Rosa missed so many signals. She would often exclaim delightedly at a pair going by, and I would look and realize that even though a girl was smiling at her AF, she was in fact angry with him."
"I became puzzled, then increasingly fascinated by the more mysterious emotions passers-by would display in front of us."
Klara is sold to a family to be an AF to 12½ year old Josie. What follows - which I'm not going to detail, so as to avoid spoilers - encompasses a few years of their lives together. There are dark moments, happy moments, sad moments. In some ways, the story feels like a fairy tale; the Sun, for instance, is anthropomorphised - and has a role to play:
[my mind had become filled with...the question of why the Sun hadn't yet sent his special help...perhaps he'd been correct at that point to wait]
This story is like peeling an onion; bit by bit, truths are exposed. There are hints of this in the early language; numerous references to 'AFs' precede the revelation of 'Artificial Friend'. The author is challenging our imagination. But my purpose here is less about the narrative as such and more about answering the question in the title.
There are various definitions and interpretations of sentience. The most commonly held view is that a sentient being has feelings. Feelings of pain and other sensations but also of emotions, consciousness, maybe even self-awareness. Much has been written about the extent to which animals exhibit sentience. The European Union's Treaty of Lisbon of 2009 declares "Member States shall, since animals are sentient beings, pay full regard to the welfare requirements of animals".
Klara seems to be intuitive about the feelings of passers by that she observes from the store window:
"When AFs did go by us they almost always acted oddly, speeding up their walk and keeping their faces turned away. I wondered then if perhaps we - the whole store - were an embarrassment to them...........another possibility came to me, that the AFs weren't embarrassed, but were afraid."
"'Those people seem so pleased to see each other', Manager said. And I realized she'd been watching them as closely as I had. 'Yes, they seem so happy', I said. 'But it's strange because they also seem upset.'"
Is intuition an indicator of sentience?
Josie, when talking to Klara before the purchase, is sensitive to Klara's feelings: "I don't want you coming against your will." Klara recounts an episode where she observes a Beggar Man and his dog, whom she believes have died. "I felt sadness then."
Throughout the story, Klara exhibits feelings. She is "waiting anxiously". "Wishing to give [Josie] privacy." "An anxiety passed through my mind." "now that I was aware, I was able to see another tiny signal."
Feelings ands awareness - surely sentience indicators.
But can intuition and sadness be learned? At one point Klara says "I believe I have many feelings. The more I observe, the more feelings become available to me." Which suggests the possibility that artificial intelligence can be programmed to learn - and to learn how to feel. Even so, once Klara has feelings, I would advocate that she has become sentient, and the AF becomes a sentient being.
Why am I so interested in sentience? My answer to that is: how can you not be? Artificial intelligence will be one of the most important challenges for humankind in the future and we will need to understand, or at least address, the challenge. I think sentience is one of the reasons I enjoy reading and watching science fiction. It's too easy to dismiss SF as mere entertainment but the very best examples explore humanity's future issues. It's one of the abiding themes of Star Trek: The Next Generation; indeed, there is a whole episode written around it - The Measure Of A Man.
I won't live to see the emergence of beings about whom philosophers will debate their sentience - Commander Data, an android, lives in the 24th century - but my grandchildren probably will. I hope they will treat the issues with the seriousness they deserve. Maybe they'll read this blog and perhaps watch some Star Trek.
The world that Klara inhabits is a futuristic one and, in addition to the central question about Klara and sentience, it has very dark parts which are not explored, more hinted at. Although essentially a fairy tale, it raises deep questions and doesn't always provide answers. I loved the way in which the author takes the reader, as though a Friend, on a journey of exploration; he shows me glimpses of life but encourages me to explore the meanings.
This is the first Ishiguro novel which I have read and I certainly will read more. I have in the past read a number of prize-winning novels - Midnight's Children and Rites Of Passage come to mind - and often found them a hard read. Worthwhile but a bit of a struggle. Klara and the Sun is never that. Eminently readable, enjoyable and even, in a way, moving.