Another common entropy source is the behavior of human users of the system.

Ideally, evaluation should take place in experiments involving human users.

They then convert these signals into representations that human users can see or read.

For a human user the process of reading or seeing these representations is receiving input.

Are those final scenes really possible, in which a human user starts to build itself a second, larger Self inside the machine?

Respect the experience of other human users of these lands and waters.

Proof assistants require a human user to give hints to the system.

User does now only imply human users, but also other processes.

Web services cannot be accessed directly by human users.

It was designed to run very complex programs late at night while the computer's human users slept.