Don't focus too much on STUMBLING BLOCK.....
Once a teacher came to his class and ordered everyone to prepare for a surprise test. Every student took their pens out and they were given the text facing down, as usual. Once he handed them all out, teacher asked them to turn over the papers. With utter surprise, students found nothing on the paper except a small dot at the center. First, they thought there was a mistake but amazingly, everyone had the same test with dark black dot. After observing student’s agitation, teacher explained that they had to write whatever they found on the page. “ But there is nothing in it ”, asked a student. “ What you see is totally up to you ”, teacher gave a confusing answer and the students started on the inexplicable task. After about an hour, teacher ordered to stop writing and collected the tests. Afte...