Premise: guy instructing people in back of train .
Correct statement: It is impossible that the guy points to the emergency stop button .
Incorrect statement: It is almost certain that the guy points to the emergency stop button .
Correct statement: It is certain that a man is talking
Incorrect statement: It is highly unlikely that a man is talking
Correct statement: It is highly unlikely that a man tells people in the back of the train to move to the front .
Incorrect statement: It is certain that a man tells people in the back of the train to move to the front .
Correct statement: It is impossible that a man orchestrates the train .
Incorrect statement: It is probably the case that a man orchestrates the train .
Correct statement: There is a better than even chance that a man is giving a safety demonstration in a train .
Incorrect statement: It is impossible that a man is giving a safety demonstration in a train .