Regular work is the basis of your work with SuperMemo. It is better to work 3 minutes every day, than to spend an hour on weekends. Regular work may go against human nature; it may be hard to bear for a great deal of individuals, but the mechanisms of memory are ruthless, and do not provide any way out of the demand for regular brain-racking. Moreover, the positive feedback between the pile-up of outstanding repetitions and the natural tendency to delay repetitions is the main source of SuperMemo drop-outs.