In my first semester of high school in 1946, an elderly wood shop teacher was grumbling about the stupidity of our generation as compared to his generation. He gave us an assignment to draw a picture of a wooden object in accordance with some precise measurements that he had put on the blackboard. Apparently, his experience was that almost no one got the drawing correct on their first try. From a group of several drawings, he randomly selected my drawing as an example of an incorrect drawing. He took out his ruler to show the class how I had measured incorrectly. After measuring my first line, he made a grunt typical of a person who did not know what to say. He quickly measured a second line and made another grunt. He then went on to another student's drawing to show how none of us could measure correctly. I don't remember the teacher ever saying anything about the correctness of my measurements. Since I have always been very precise with everything I did, the teacher had obviously made a mistake in selecting my drawing to prove his point.