Josh Bersin writes about and illustrates in a graphic how fast corporate learning has changed in the last 15 years. From online instructor-led training to visually stimulating, personalized and reduced but potent content, employees expect more than linear learning.

Published in the article Digital Learning Is Here—Kind Of, Josh goes on to talk about how there is a 20 minute learning window. And in some cases like Ted Talks videos, 8 minutes is even too long.

Source: https://www.shrm.org/resourcesandtools/hr-topics/technology/pages/digital-learning-is-here-kind-of.aspx

As technology and content have changed, so have the expectations of employees. Our new research shows that employees have about 20 minutes a week to "learn," and most of the time they are so overwhelmed with e-mails and other tasks that even this time is interrupted constantly. One client told me recently "even TED Talks are now too long for our people; they don't have eight minutes at a time to learn." --Josh Bersin