I feel like these ideas could not have been used to test a Facebook. Asking people if they want to use a new social network without actually seeing and touching

I feel like these ideas could not have been used to test a Facebook. Asking people if they want to use a new social network without actually seeing and touching it would not have been insightful. You could describe to the wall but because the concept was so new I feel like most people including myself would not necessarily see the value of it right away. Asking people to commit to pay for it is even more of a stretch. It doesn't apply to all situations.