Plus the purpose of a house generally does not change much. If you buy one, you're not going to turn it into a bar one year, then turn it into a candle shop the

Plus the purpose of a house generally does not change much. If you buy one, you're not going to turn it into a bar one year, then turn it into a candle shop the next. The requirements usually stay the same. Some business apps do need to change every year. There's not any common sense for this situation (like house building) because you'd need to predict the future. >UX first can work if it's iterated in small cycles continuously Absolutely agreed, what I've generally seen is that the first iterations are there to get the UX grammar down with non-technical users. Then they can see what they like and don't like and their requirements become more coherent.