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.
I’ve been musing for a while now on the way blog posts are typically presented—in reverse chronological order. This format has never truly made sense and does not reflect the way good writing and thinking happens.
...The main issue with the ‘pile’ system is that this post is eventually buried beneath more recent pieces of writing; there is no incentive for revisiting or updating the work. Even worse, if an author does decide to unearth the piece and make some major changes, those who read the original piece are not made aware of these alterations. The sorting order is static.