Comment Re:Consumer feedback removes need for certificatio (Score 1) 139
You have strong faith in an ideal free market. As one can see from the "Perfect Competition" entry in wikipedia, an imporant assumption of ideal free market is perfect information - All consumers and producers are assumed to have perfect knowledge of price, utility, quality and production methods of products. However, perfect information is never possible in the real world. While improvement in consumers' ability to share information would improve spreading of some information, many kind of information remain asymmetric. Some information are asymmetric because a producer or supplier always has more information than a consumer. For relatively simple jobs like taxi driving, the information advantage of the supplier is not very big. But for more specialize job that requires years of training, a supplier have much more information than a customer. Without certification from a professional body, it would be very difficult for consumers to judge if a supplier is competent or not, unless the consumers themselves undergo years of training to become experts themselves.