Galileo's infinities and infinitesimals

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The purpose of this assignment is to re-live the quandary of infinities and infinitesimals that plagued the Greeks and later Europeans until the nineteenth century. In this assignment you'll examine the difficulties through Galileo's eyes and mind by studying parts of the first dialogue in his book Dialogues Concerning Two New Sciences.

General directions

Do the following exercises and prepare to present your work to the class.

Exercise 1 - Read and Summarize

Individually read pages 30-36 in the handout fragment from Galileo's first dialogue. As you read, keep a list of major difficulties and arguments concerning infinities and indivisibles in the dialectic between the Salviati, Sagredo, and Simplicio.

Exercise 2 - Analysis

Identify and clearly state the most important points Galileo is trying to make about the continuum. Analyze each claim and supporting argument to make sure you understand the reasoning and can recite the argument yourself.

Exercise 3 - Recapitulation

Based on your analysis in the previous exercise, prepare an outline that will recapitulate Galileo's position and arguments on nature of the continuum. Your outline should focus on the way Galileo proposes to work around the apparent contradictions that he acknowledges in the constitution of the continuum.

Exercise 4 - Summary Paragraph

Convert your outline from the previous exercise into one or two paragraphs (at most) that you can present to the class. Your paragraph should include a brief introduction, a thesis, and an argument defending your thesis with supporting citations from the text. Remember, focus on what you think is Galileo's most important insight rather than trying to cover everything that Galileo says.

Exercise 5 - Class Presentation

Read your paragraph to the class and be prepared to defend your thesis.