It's well worth reading the original 'Good Product Manager/Bad Product Manager' chapter from 'The Hard Thing About Hard Things': <a href="https://a16z.files.wordpress.com/2014/08/good-product-manager.pdf" rel="nofollow">https://a16z.files.wordpress.com/2014/08/good-product-manage...</a><p>(It is also linked in the article, but I missed it first time through).