Read “Can a Playground Be Too Safe?,” http://www.nytimes.com/2011/07/19/science/19tierney.html and answer the following questions, one paragraph for each question: 1. What effect is Tierney most concerned about? 2. What are its causes? 3, What is Tierney’s claim? What is his warrant? 4. Why might someone disagree with Tierney? Why might someone agree? 5. What are the proximate and remote causes Tierney mentions? 6. Which cause/effect relationships Tierney describes are probable? Are any absolute? 7. Are the causes a web or chain or both? 8. Characterize three cause/effect relationships in terms of necessity and sufficiency.