The story of Ron Popeil (great inventor and marketer) is a classic rags to riches story. One of the reasons he attributes to his success is innumberable interactions with the customers. Demonstrating his products in front of real live people who asked silly questions and broached objections, he was able to learn what the silly questions and objections were and build the answers and counter-arguments into his pitch. The same he carried over to television for selling Veg-O-matic which was a great commercial success. It seems so true but still a lot of companies wait for the perfect product to be released in the market rather than released a well made product which enables a quick feedback. Roberto Kiyosaki says the same in his book Art of Start : " Develop Quick proptotypes and test it out in the market. "