Got this in my mailbox. It's a set of questions designed to indicate the possible presence of symptoms of a stroke. It's a set of four tasks you can have someone perform. If someone is acting strangely, you can use these to highlight possible symptoms of a stroke. Of course, it's not a definite answer, but it should help to tell whether that person should see a doctor or go to the hospital right away.
These four tasks/questions are:
Failure to any of these tasks could mean it's a symptom of a stroke.
It's very important because an early detection of a stroke will save lives. If a stroke isn't caught on time, it could mean permanent brain damage, or even result in death. When found on time, its effects can usually be reversed (almost) completely.