Today’s world, with digital technology everywhere, inspires people to pay attention to usability. Usability testing is the art and science of measuring if someone, who has some task, can use a thing to get their task done. Can a person do a thing? That’s usability.And remember, usability is not pass/fail. It’s a matter of degree, so things are relatively more usable. Or less. We can’t define an ultimate end point — something that’s usable can always be made more so.