Answer:
The second paragraph presents arguments in support of a new theory and the third paragraph presents arguments against that same theory.
Step-by-step explanation:
The third paragraph explains the central idea of the passage that people find obvious philosophy more appealing than abstruse philosophy.
It neither presents a new argument nor offers a summary of earlier ideas. The author offers examples to provide evidence for his main idea and not for a general point in the last line of the last paragraph.