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.
In our cultural obsession with billionaire entrepreneurs we laud new features more than the maintenance and incrementalism work of making old features better and more accessible. Maintenance looks like red minus signs in the spreadsheet. New features look like green plus signs. New features look better on our LinkedIn profiles. New features have that pizzazz, baby.
When gardening, the building of planters and initial planting is a very short process. The majority of your time is spent nurturing and monitoring growth. I personally feel the struggle between maintainer work and new shiny feature work. I enjoy that new feature smell but I know that my day-to-day is more like a janitor on a boat mopping up someone else’s barf. In terms of metaphors, the gardening metaphor is certainly better, and it acknowledges that design and development still tend to be more creative endeavors.