Interestingly, author thinks these points may not be relevant today. What has changed?<p><i>Warning: This document was written 15 years ago and is probably not relevant for today’s product managers. I present it here merely as an example of a useful training document.</i><p><a href="http:&#x2F;&#x2F;a16z.com&#x2F;2012&#x2F;06&#x2F;15&#x2F;good-product-managerbad-product-manager&#x2F;" rel="nofollow">http:&#x2F;&#x2F;a16z.com&#x2F;2012&#x2F;06&#x2F;15&#x2F;good-product-managerbad-product-m...</a>