Everyone needs to take a quick logic class.
There is a common rule in probability theory (used in artificial intelligence and probably many other things I don't know anything about) that people get wrong.
X implies Y
Does NOT that Y implies X
The example given most often in texts I have read is
90% of people who have meningitis have a stiff neck. So Meningitis implies a Stiff neck
However Stiff Neck does not imply meningitis becasue if all I told you is that I have a stiff neck today there is something like a .0000001% chance I have meningitis. So that wouldn't be your first guess. You would probably guess that I slept wrong or pulled a muscle.
Maybe this example should be changed to:
Ebola implies vomiting. Vomiting does not imply ebola.
If you know someone has ebola it would be intelligent to assume they will vomit. However knowing someone vomited ebola is not a good first guess
At a theme park I would assume these things before ebola:
Went on a ride that made them motion sick (possibly after eating)
Ate too much rich foods/something new that didn't agree with them
Stood in the sun too much (sun or heat sickness)
Flu that someone thought I spent X on vacation and am not staying in the hotel.
There is a common rule in probability theory (used in artificial intelligence and probably many other things I don't know anything about) that people get wrong.
X implies Y
Does NOT that Y implies X
The example given most often in texts I have read is
90% of people who have meningitis have a stiff neck. So Meningitis implies a Stiff neck
However Stiff Neck does not imply meningitis becasue if all I told you is that I have a stiff neck today there is something like a .0000001% chance I have meningitis. So that wouldn't be your first guess. You would probably guess that I slept wrong or pulled a muscle.
Maybe this example should be changed to:
Ebola implies vomiting. Vomiting does not imply ebola.
If you know someone has ebola it would be intelligent to assume they will vomit. However knowing someone vomited ebola is not a good first guess
At a theme park I would assume these things before ebola:
Went on a ride that made them motion sick (possibly after eating)
Ate too much rich foods/something new that didn't agree with them
Stood in the sun too much (sun or heat sickness)
Flu that someone thought I spent X on vacation and am not staying in the hotel.