Education is like a map that shows right directions for travelers to get to their destination.A good map may give people clear and right instrucitons,while a bad one may lead to the opposite result.The author  simply claimed that educational institutions should dissuade students from pursuing fields of study in which they are not likely to succeed.It is true that any educational institutions should give students guidance to help students to succeed.If a students receives good suggestions in time of need,it would save them a lot of energy to achieve their short-term goals.When Einstein was very young,his uncle,an engineer,told Einstein a vivid and interesting story about a hunter to hunt rabits to help him study algebra.Because his uncle told him :"think of  'x' as a rabit and you as the hunter,your goal is to get the rabit!".After that Einstein became very interested in math,because he never thinks math is dull anymore,he always thought he was playing a game.With a good suggestion at an early age,Einstein developed strong interests in science and math and ultimately became a great physicist.But to dissuade students from pursuing the things they like sounds absurd.The goal of education is help people to succeed in fields they are interested in.If a student just come up with an idea and is about to implement it,but he was told that his idea was not going to be successful by some "expert".He will be very upset and disappointed and may even become self-abased,thus no longer have the courage to throw himself into the things they are interested in.Besides,the definition of success is hardly to be explicit in some degree.A responsible educational institutions will not tell a student that you can not succeed in this or that.If they do that,the development  of human beings will be slowed and may even regress.Most successful breakthroughs in the human history are based on failtures and tryings.How you make sure that you cannot do something if you never try to do it?Only through tryings and improvement can one make their dream come true.Finaly,the appropriate way is to encourage student to try things out.A famous experiment conducted by a group of well-know researchers proved that encouragement will significantly influence the chance for to obtain outstanding achievements.The experiment selected several students from a high school and set them as the controlled group one,and the students were told that they are the smartest students in this high school and you should study in the same class with the best teachers.After several weeks,their grades improved significantly.The science of positive psychology also shows that appropriate encouragement will help one to obtain better performance in the filelds they are pursuing.Education is as important as breathing, good education can save us energy and time,thus give us better chance to be successful.We should try to find our weaknesses by failing and trying,and never say never.And that should be the voice we can hear from a educational institution.