There are several good reasons for this restriction.
Let's assume the only computer at-hand is the one with an init problem and no cell-phones are allowed on-site. If one of the services that will not start is "Network", then suddenly not having Internet access is a reality and the provided documentation becomes suddenly more important.
Also, this lends itself to be a good test of the documentation. When I evaluate software, documentation is also considered. I prefer a package with a few bugs and excellent documentation (excellent documentation might even include a list of known-issues or bugs) over a package with no known flaws but horrible documentation. As a sysadmin, I place great value on being able to trust the documentation, and, based on the documentation, to be able to predict how the software will run under various conditions.