When I worked as a hospital doctor, I often had to dictate letters. I was terrible at this: it was far faster for me to type them myself than to dictate, but this wasn’t always possible.

Like most people, the way I express myself when I speak is quite distinct from the way I express myself when I write. Seemingly unlike most people, I found it impossibly challenging to adapt to composing written text through the medium of speech. The two feel like completely unconnected systems: it’s like trying to rub my tummy and pat my head.

Back in February, I felt a little sceptical about how useful people believed ChatGPT to be.:

Much of the overhyped discussion about ChatGPT seems to be confusing this language model for something approaching artificial general intelligence.

This week, I’ve changed my mind: I think I’ve underestimated it. The difference has been the addition of voice chat to the model. The voices are impressively lifelike: they have intonation, they use filler words, they sometimes vocally trip, and all of that adds to the effect.

But more importantly: talking is different from seeing writing on a page. I don’t have the same basic expectation of factual accuracy in speech as in writing: I expect a bit of extemporisation, reference to half-remembered facts, a bit of loose interpretation here and there. In conversation, it’s natural to say “that doesn’t sound quite right” and to dig a little deeper into the background; in writing, it’s normal to expect the black-and-white content to be checked and accurate. In other words, the flaws in ChatGPT’s abilities seem to me to fit more naturally with speech than with writing.

I can well imagine phoning a version of ChatGPT to book a restaurant table and being entirely satisfied with the experience—and perhaps even uncertain as to whether I was talking to a person. Similarly for ordering takeaway. I may be writing this on an empty stomach, but there are all manner of customer service interactions that I could imagine using the voice version of ChatGPT for where the text version may seem a little—well—robotic.

I can also imagine it being useful for things like supported professional reflection. For example, only today, I’ve written a reflection about what I’d learned from a course I’d recently attended and how I’ve applied it in practice, as required by the medical regulator. I actually think that having a somewhat more probing voice chat on the same topic with a version of ChatGPT could stimulate deeper reflection and greater thought than simply writing down my own thoughts.

Essentially: I think I considerably underestimated the tool in February. ChatGPT is still a million miles away from artificial general intelligence, but I can now see much more clearly that large language models may have many more far-reaching applications than I’d been able to see back then. Chatting with ChatGPT has broadened my perspective.

The image at the top of this post was generated by Midjourney.