System Lifetime and Documentation

Long-lifetime systems may require more design documentation to communicate the original intentions of the system to a support team — though supporters of agile methods rightly argue that documentation is frequently not kept up to date

Explanation

Long-lifetime systems may require more design documentation to communicate the original intentions of the system to developers who will maintain it. However, supporters of agile methods rightly argue that documentation is frequently not kept up to date and is not much use for long-term system maintenance.