I think this is pretty much true
“Get Investors to First Invest Time
After giving investors an overview of your company, your next goal is to secure a meeting. Realize that investors have two scarce resources: their time and their money. Start by getting them to invest their time in learning about you and your company. Importantly, how they feel about you personally is often equally significant to how they feel about your company’s success prospects.
So, secure the meeting, bond with the investor, and use the time to determine and answer all of his questions. You can generally answer questions far better in person than including them in your plan, as you can adjust based on follow-up questions and/or the investor’s body language and tone.”
“Why You Shouldn’t Send Your Business Plan to Investors | Entrepreneur.com” http://feedly.com/k/179jBQk