Is WHO you know more important than WHAT you know, if you want to be a business success?

I was leafing through a copy of "Real Estate Riches" today, by Dolf De Roos.... (This is in the "Rich Dad's Advisors" series of books....)

Anyway, at the very beginning of the book is a quote by Robert Kiyosaki, which struck me. Here's the part which got my attention -

My poor dad often said, "What you know is important." My rich dad said, "If you want to be rich, who you know is more important than what you know."
- Robert Kiyosaki, from "Real Estate Riches" by Dolf De Roos

What do you think - is this true? Is WHO you know more important than WHAT you know, if you want to be a big success in the business world?

To me, this speaks of the possibly incredible importance that can be found in having good contacts....

- Dien Rice