1. 30 Naval Ravikant: AngelList
2. The estimated breakdown of tech start-ups (using tech start-ups less than 10 years old and with fewer than 100 employees) was reported in Chresten Knaff, answer to "How Many Tech Startups Are There in the US and How Many People Do They Employ?;These data came from Business Dynamics Statistics from the US Census Bureau,2012
3. We also investigated the websites of a number of start-up lawyers and confirmed that their stated per-hour legal fees fall approximately in that range. However, complex matters;The $350-800 per hour number comes from an estimate in Thorman,2012