In the pursuit of more and more knowledge, the student may develop a tendency to give careless answers and hastily jump from question to question in order to reduce the repetition time. There are no dangers related to fast repetitions on condition that the speed is achieved by simplicity of items rather than by negligence in providing answers. It is often possible to automatically answer a question without understanding its important implications. Instead of being semantic, i.e., based on the meaning, the repetitions become syntactic or literal, based on the automatic rendition of the item's wording. Not only is the thus acquired knowledge of little value, but what is more dangerous, the student may become disillusioned with the SuperMemo method because of inadequate progress in the development of desired skills. To prevent such an outcome, the student must constantly control the learning process by asking the following questions:

All these questions must recur again and again, and the student must constantly maintain the highest level of alertness and concentration. The degree of improvement obtained by mastering concentration ability is extraordinarily high and worth while. Sloppy work will produce little results and cause disillusionment.