Marc says, you don't need to plan too much...

In the 7th article of this series...Marc is trying to assure the aspiring entrepreneur, that he does not need to, rather he possibly cannot, figure out exact details of the business plan or revenue model, all upfront...I was slightly disappointed at the post though...as it focuses too much time on the story (How Edison accidently invented the phonograph)...but too little on actual concrete analysis...unlike his previous more elaborate posts.