This is a captivating piece! As a Wittgenstein fan for over 20 years, relatively knowledgeable about his life and thought, I really appreciate your decision in this piece to focus on the relationship between Russell and Wittgenstein (and avoid rabbit holes that would derail readers). Not only is it a human and endearing story the way you tell it, but it also brings to life one of the great philosophical baton-handoffs in the history of philosophy -- the chemistry that led two men to between them change the course of philosophical history. Thank you for writing it!