Business plans are very much like 'big design' documentation. If you have a 50+ page business plan that took you weeks to research & write you either become st

Business plans are very much like 'big design' documentation. If you have a 50+ page business plan that took you weeks to research & write you either become stuck with executing that plan no matter what, or you spend an inordinate amount of time on updating/refactoring your business plan as things change. Business plans for entrepreneurs serious about starting a business (and not just finding VC) should be agile. The first rule of business is that how you see your business structured and operating now will change. So, make sure your planning doesn't eat your life and paralyse your implementation.