text: The reason why you should get multiple people's advice and opinion's is so that you all the possible ways you execute something. For example you get advice on how to swim butterfly from Michael Phelps and Caleb Dressel, another great swimmer who actually recently broke Michael Phelps's world record. Everyone has there own little trick or way they swim, Michael and Caleb did not learn the same way as each other. If you get the advice of both of them on how to swim butterfly you could the pros and cons on there different ways of swimming and make a hybrid on how to swim butterfly faster. Living with just one person's opinion is never good.