Investing for the sake of the adventure is rarely a good idea. Venture capitalists are masters of investment and run the game on what makes a sound business decision and what looks too risky. They’ve built careers off of detailing the key factors necessary to make these decisions, regularly. Ernst & Young U.S. Venture Capital Leader Jeff Grabow shared his wisdom with me recently on a podcast I ran, where I learned all about what venture capital really is and why VCs invest.