As a lawyer, I laughed and laughed about the lawyer not being able to admit "he'd screwed up". It's such a common problem and start-up founders are well advised to carefully vet not only their own advisors but also the VC's or Angel's ones. The truth is that many, many advisors are inexperienced (no one knows all of the answers in a world where human knowledge doubles every few years) but it is the advisor's failure to admit a lack of experience or knowledge which is potentially fatal to YOU.
Congratulations on the great article, Graham. I've read tones of this sort of stuff over the years and I believe that your article is the closest to an honest, sensible guide to fundraising I've ever seen. It should be mandatory reading for all would-be startup founders.
Please, please keep up the good work!