Lia’s journey · scene 14
After each visit, the team records an audio message telling how it went. There are dozens a week, and nobody listens to them again. The attendance lists from two schools still arrive on paper, photographed with a phone. Lia realized that half of what the team knows is in formats the spreadsheet can’t read. What if it could be read?
For a long time I could only use generative AI professionally with text — I even asked in public whether I was missing something. Today I talk more than I type: I dictate what I want and record conversations to think about later. The machine now accepts the world in the format it happens in.
This has a name — multimodal models — and it raises one question before any other.
What changes when the input isn’t text?
On the inside, less than it seems. An image is a grid of numbers (chapter 2). Audio is a sequence of measurements of the sound wave. Everything becomes pieces, the pieces become vectors, and the same machinery from chapter 3 calculates what comes next.
If the machinery is the same, what would you expect of the flaws? That they’d be the same too: when information is missing, it fills in with what is plausible.
Provocation: before opening each tab, answer this: if the transcript of a visit comes with a sentence nobody said, who is going to notice — and when?
Voice → text
What you gain. The account of a visit, the meeting, the class: it all becomes searchable text that can be summarized and compared.
Where it tends to go wrong. Proper names, numbers, accents, people talking over each other. And a stranger kind of error: stretches of silence or noise can turn into whole sentences nobody said. A study of a widely used transcription system found made-up sentences in about 1% of the recordings, more often in speech with long pauses. I myself once got a transcript that ended with a subtitling credit I never dictated.
The question. Who listens to the original audio before the transcript becomes the official record?
Image → data
What you gain. The photo of the paper attendance list becomes a table. The scanned document becomes filled-in fields.
Where it tends to go wrong. Handwriting, a 1 that becomes a 7, a skipped row, a shifted column. The result always comes out clean and aligned — including when it’s wrong.
The question. How do you check without redoing everything by hand? (Hint: totals that have to match and a randomly drawn sample.)
Text → image
What you gain. An illustration for your materials, a sketch of a screen, variations on an idea in seconds.
Where it tends to go wrong. It repeats the stereotypes from training (chapter 4): ask for “a scientist” a few times and watch who shows up. It can produce something that looks like a photograph of a real person.
The question. Will the people who see this image know it was generated? Should they know?
Text → voice and video
What you gain. Narration for your materials, a short explainer video, accessibility for people who don’t read.
Where it tends to go wrong. It’s the use that consumes the most energy (chapter 6). And it’s the one that comes closest to putting words in someone’s mouth.
The question. Whose voice and face are these — and did that person agree?
So what’s different from text?
Three things, and all three call for more care, not less:
- Checking takes more work. Rereading a paragraph takes seconds; listening again to ten minutes of audio takes ten minutes. What’s laborious to check tends not to get checked.
- The data is more sensitive. A voice and a face identify a person in a way a name doesn’t (chapter 5). A recording of a visit brings along with it the home, the children in the background, what the family shared in confidence.
- It costs more, in money and in energy.
A question I’m leaving unanswered on purpose: is transcribing everything a better record of the work, or is it starting to keep what used to get lost, for good reasons?
A path, before you record or photograph
- Whose voice, face, handwriting is it? Does that person know?
- Where does the original file stay, and for how long?
- Who checks the output, and how: all of it, a sample, the totals?
- What happens if it’s wrong? A meeting summary with an error is different from a visit record with an error.
- Is it really needed? Sometimes three lines written by someone who was there are worth more than forty transcribed minutes.
Key takeaways
- Voice, image, and video go through the same machinery as text and inherit the same flaw: filling in with what’s plausible.
- The output always comes well formatted. Looking good isn’t a sign of being right.
- The harder the data is to check and the more sensitive it is, the more the decision to use it has to be made before, not after.
Lia’s logbook
- Questions she took with her: does the family know the conversation becomes audio, and the audio becomes text? What do I gain by transcribing everything — and what do I start keeping that I didn’t keep before?
- A way to find the answer: transcribe ten recordings and listen to all ten, checking; note where it got things wrong (names, numbers, silences); decide with the team what becomes a record and what gets deleted; ask before recording.
- New project piece: the rule for what can be recorded, who checks it, and how long it’s kept.
Take it to class
Activity (30 min) — hunting the well-formatted error
In groups: (1) record one minute of conversation with at least three proper names, two numbers, and one long pause, and transcribe it with a tool; (2) photograph a handwritten table with ten rows and ask for it to be converted into a spreadsheet. Mark every error. Then swap the results without the originals with another group: how many errors can the other group find just by looking at the output?
Discussion questions
- Which errors only showed up when you compared with the original? What does that say about keeping or deleting the original?
- In what situation in your work would a transcribed recording become an official document? Who should sign off on it?
- Would you want to be told when the voice on a service call is synthetic? Why?
- What content would you decide never to record, even if the technology allowed it?
References
- Koenecke, A., Choi, A. S. G., Mei, K. X., Schellmann, H., & Sloane, M. (2024). Careless Whisper: Speech-to-text hallucination harms. arXiv. https://doi.org/10.48550/arXiv.2402.08021
- Maranhão Filho, É. (2025, January 17). A speech-to-text slip that shows where the training came from. efrem.io. https://efrem.io/blog/en/a-speech-to-text-slip/
- Maranhão Filho, É. (2025, January 27). Am I missing out on multimodal AI?. efrem.io. https://efrem.io/blog/en/am-i-missing-out-on-multimodal-ai/
- Maranhão Filho, É. (2026, August 18). Recording calls to think things through with Claude. efrem.io. https://efrem.io/blog/en/recording-calls-to-think-with-claude/