Conclusions

You may believe that, in a given  situation, the options or conclusions available are only a well-defined number: 1-2-3... You do not accept the idea that there might be others only because your mind cannot rationally see them. Imagine now that you are an instructor: you gave your students a listening test where they had to fill in some blanks according to your reading, which used some words slightly different from the textbook. Later, when you check the test, you realize that most students had written not your words but exactly what was in the book... Your conclusion is that they either had cheated from the book, or one student had memorized the text and passed the answers over to the others. You are sure that nothing else could have happened. Eventually, you find out that, while you were briefly out of the classroom, another instructor had let the students listen to the recording "from the book". Most students had consequently changed the answers!