" That means you're very likely to be working with an out-of-date model of the problem you're trying to solve." This is highly context sensitive. The models I

" That means you're very likely to be working with an out-of-date model of the problem you're trying to solve." This is highly context sensitive. The models I deal with when I develop software change very seldom, if ever. Different projects have different cadences for inputs and outputs, even within this wide domain we call "software engineering".