Synthesized answer
The provided passages do not contain information about what questions remain unanswered in the book "Steal Like an Artist".
The passages describe the origin of the book as a list of ten things Austin Kleon wished he'd heard when he was younger [1]. It also mentions that the book expands on this original manifesto and includes anecdotes and exercises [1]. However, there is no mention of any unanswered questions within the text.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Steal like an artist by Austin Kleon Description: When asked to talk to students at Broome Community College in upstate New York in the spring of 2011, Austin Kleon wrote a simple list often things he wished he'd heard when he was their age: 'Steal like an artist; Don't wait until you know who you are to start making things; Write the book you want to read; Use your hands; Side projects are important; Do good work and put it where people can see it; Geography is no longer our master; Be nice (the world is a small town.); Be boring (it's the only way to get work done.); and, Creativity…