Once you see that an answer is not serving its question properly anymore, it should be tossed away. It's just their natural life cycle.
They usually kick and scream, raising one hell of a ruckus when we ask them to leave. Especially when they have been with us for a long time.
You see, too many actions have been based on those answers. Too much work and energy invested on them. They feel so important, so full of themselves. They will answer to no one. Not even to their initial question!
The hardest thing about customer interviews is knowing where to dig. An effective interview is more like a friendly interrogation. We don’t want to learn what customers think about the product, or what they like or dislike — we want to know what happened and how they chose... To get those answers we can’t just ask surface questions, we have to keep digging back behind the answers to find out what really happened.
One thing I've been enjoying about working as a technical writer is that the minute-by-minute texture of the work feels right. Something about formatting text, faffing about with SVGs, trying to rewrite a sentence more clearly... it's just enjoyable in itself, and I feel at home with it.
...Working as a programmer was very much not like that. There's something in the rough vicinity of professional dev work that I do like, which I could probably label as 'iterative hobbyist tinkering with websites'. I like working on something with a strong visual component, and I like to be inside of a fast feedback loop, and I'm mostly interested in just somehow bodging through until it works. I'm not very interested in either the computer-sciencey side of programming — data structures, algorithms — or the software-engineerey side of making things run reliably at scale in a maintainable way. So maybe it's not surprising that the minute-by-minute texture of professional programming was just... kind of bad. Occasional fun bits when I got into something, but the background experience was not fun.