1.Write a summary of the main applications mentioned in the paper. 2.Try to find at least one of the references in the “Further Reading” section, or find a paper on your own (newer than 1993) on an application of the pendulum model in science. Give a very brief summary of the application in this paper. 3.How has mathematical modeling linked seemingly disparate sciences? 4.What physical/biological insights have been made due to studying these models that were not obvious from experiment or observation of nature?