See related articles. The training doesn't go off on tangents. Pretesting can be incorporated to find out what the learner knows before training begins. Based on the results of the pretest, only the materials not yet mastered are presented.
Learners can take the training when they're in the mood to learn something new.
Responses can be monitored to identify areas where the training is too detailed or is causing confusion. By fine-tuning an existing course, over time, its duration can typically be reduced even further. Our President, Travis Piper, has been in the CBT field for over twenty years. He has seen many CBT organizations formed and dissolved. The main reason for their dissolution was that they did nothing to prove to their organization that they were making a positive contribution to the bottom line.