Don&#x27;t forget the Horowitz in Andreessen Horowitz.<p>Ben Horowitz is an authority on management and I bet a17z investments get as much focus on sustainability and fundamentals as anyone.<p>I recommend his blog <a href="http:&#x2F;&#x2F;www.bhorowitz.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.bhorowitz.com&#x2F;</a>, and there&#x27;s a book based on it too. It&#x27;s a level headed management blog with far less future gazing than you&#x27;d expect.