Synthesized answer
The provided passages do not contain information about the specific evidence the author, Friedrich Waismann, provides in "How I See Philosophy." The passages only include the title, author, category, and page count of the book. Therefore, it is not possible to answer what evidence the author provides based on the given text.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: How I See Philosophy by Friedrich Waismann Categories: Philosophy Pages: 269