The idea that variability is the source of most quality problems was a major contribution of which quality management thought leader?.

The author understands the feelings of a mother. When Enrique was a child his mother Lourdes decided to leave children and move to the north of the United States. She wanted to support her family and do something for them.  Enrique’s Journey by Sonia Nazario is a nonfictional piece of literature. When he was 16, he went out to find his mother with nothing but a phone number, to begin with.  He was heartbroken; Meanwhile in Antoine De Saint-Exupèry’s story called the Little Prince,  a plane crashes and the pilot meets a prince of an asteroid.  Both Enrique and the pilot both learn how not to be careless and survive in harsh conditions.