I was a noob at the time and had assumed he was a minimum of 1 year experience better than me and really knew what he was talking about. He used great business terms and convinced the non-techies, too. In retrospect, it's a very obvious mistake. He convinced us the open source project that we based our business on for the 6 months before hiring him had limitations, but it turns out that the open source project was packed full of features, well polished, well designed, easily extensible, etc. and we spent 2 years catching up to where that product was, just in a different framework.