Group 1 - The core viewpoint emphasizes that striving for excellence is essential for product managers, but excellence should not be confused with perfection, as a flawless product theoretically does not exist [1] - The article suggests that having product shortcomings is acceptable, but lacking standout features is a concern [1] Group 2 - The event mentioned is a specialized course on consumer reconstruction, featuring top practical mentors from Japan and China, aimed at dissecting the methodologies of major consumer giants [2] - The course is scheduled to take place in Shanghai from August 7 to August 9, with an early bird price of 9,800 yuan per person, down from the original price of 12,800 yuan [3]