>"You say he talks about those things in his book in addition, but you can't call that "showing his work" if the work shown doesn't include the most relevant pa

>"You say he talks about those things in his book in addition, but you can't call that "showing his work" if the work shown doesn't include the most relevant parts." The spreadsheet and book are complementary; you won't really understand either without reading both. In order to understand 'the work', you also have to know the question and the final answer.