3 things to read this weekend

• The Spy who scammed us — is an intriguing story of seemingly super spy Jamie Smith, the man who cofounded Blackwater. But is any of it true? The Outside Magazine tries to find out.
• Why have’t CPU clock speeds increased in the last 5 years? CPU designer Jonathan Kang offers a good answer on Quora.
• The empire of edge — The New Yorker tries to explain the history and scope of the SAC Capital scandal. I am still unable to keep all the details straight, despite this fantastic story. 

Have  great weekend everyone!