Yeah this is VERY basic knowledge. For my analogy. The guy is basically saying if you had more customers come through your store then you would probably sell more. I think this is a pretty known and simple concept.
So true I am so tired of all the Business in a Box and make money within 24 hour hype where you are told to just get your site up and customers will be beating down your door credit cards in hand. If you have a good list of buyers you could promote a new site to them and that could work otherwise from free organic traffic, forget it. -Mark
Traffic is probably THE most important thing for your online business. No matter what you're selling, as long as there is demand, you can make a killing if you know how to get a consistent flow of targeted traffic. Easier said than done though.
Like one said: He earned his first $1000,000 selling books how to earn your first $1000,000 Sorry for little offtop