Investors want to see the reasoning behind your assumptions. They know the business plan will have to change with the marketplace. But the quality of thinking behind the idea won't change. The thinking that goes into a business plan is extremely valuable. The jockey, in Joos's analogy, is the team that steers a business idea to market.
Human capital is simply harder to acquire than financial capital.
But don't give a litany of past experience. Talk about your background and how it will contribute to the current challenge. Talk about the learning experiences that relate to your present endeavor.