Scaling feedback?

Scaling feedback is such a succinct way to phrase the problem. All effective learning seems to require some kind of feedback, so how can we add more as well as multiply the impact of what's there?

Scaling could be along channels of information. We can expect an audio-less black-and-white educational video to have missed some opportunities to reinforce key ideas compared to a video that consciously uses color to show relationships between objects on screen and uses audio to add emotional impact.

To me lately, scaling feedback has meant a scripted system of procedurally generated  feedback. The answers chosen in an interactive eLearning could be tracked by holistic variables like "amountOfRiskTaken" or "customerSatisfaction," and then the quiz can present conditional feedback to the learner according to where they fell on that measure. For learners who chose more answers that were technically correct but also resulted in a negative customer satisfaction, the eLearning could provide additional feedback reminding them of the customer. While this kind of functionality doesn't help scale access to the content, it does scale the effectiveness of the content by giving some of the most immediate feedback the learner can receive.