Synthesized answer
The provided passages do not offer specific evidence that the author uses. Instead, they describe the scope and subject matter of the book "Words and Rules" by Steven Pinker and Arthur Morey [Passage 1]. The passages indicate that the book explores profound mysteries of language, such as how language works, how we learn to speak, why languages change, and their irregularities and quirks [Passage 1].
However, the passages do not detail the specific evidence or types of evidence the author employs within the book to support these explorations. Therefore, to answer what evidence the author provides, further content from the book would be needed.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Words and rules by Steven Pinker, Arthur Morey Description: How does language work, and how do we learn to speak? Why do languages change over time, and why do they have so many quirks and irregularities? In this book, the profound mysteries of language are explored.