Premise: A person is standing at the top of a rocky cliff overlooking land .
Correct statement: It is impossible that an eagle is training its chicks to fly .
Incorrect statement: There is a very good chance that an eagle is training its chicks to fly .
Correct statement: There is a very good chance that a man is going for a hike .
Incorrect statement: We doubt that a man is going for a hike .
Correct statement: It is impossible that a person is standing at the top of a rocky cliff at the pacific ocean .
Incorrect statement: It is probable that a person is standing at the top of a rocky cliff at the pacific ocean .
Correct statement: There is a very good chance that a man has just climbed up a cliff , and is looking below .
Incorrect statement: We doubt that a man has just climbed up a cliff , and is looking below .
Correct statement: It is impossible that a guy is thinking about jumping off the cliff .
Incorrect statement: It is probably the case that a guy is thinking about jumping off the cliff .