One of the most important endeavors a person can undertake is to get a good education. The benefits are plentiful, not just for the individual, but also for society.
Not too many people are able to obtain the necessary knowledge to succeed. The cost of a degree in any subject is quite high. Some fortunate people with wealthy parents or scholarships have a great advantage over the ones that must make a student loan or get a good paying job while also attending a university or college.
In regard to the success of a degree-d person, it depends mainly on a few factors; namely, a person must have an above-average intelligence and a lot of motivation and dedication. But even those in possession of those indispensable requisites (above-mentioned) must also have a good capacity to retain much of the learned subject.
For example, doctors, after they graduate from any medical school, have to have 3 or 4 years of internship in a hospital before they are allowed to practice medicine.
And an MBA graduate also has to go through a period of training on the job in order to succeed in their employment.
To summarize, I believe that the best of professionals must have a great retention memory.