The conventional wisdom for e-learning is that content should be delivered in short chunks. [Six minutes](https://blog.edx.org/optimal-video-length-student-enga

The conventional wisdom for e-learning is that content should be delivered in short chunks. [Six minutes](https://blog.edx.org/optimal-video-length-student-engagement https://blog.edx.org/optimal-video-length-student-engagement) gets spoken of as the ideal, but 'short chunks' is the headline. People are more likely to engage with shorter videos fully. I personally do take some issue with this - it's a quick boost for engagement metrics, sure, but some topics actually need time and space to breathe. Short videos work for hammering key bullet points into students, but when you're dealing with more complex content - anything skill-, rather than knowledge-based, for example - then it gets more complicated than that. Shorter videos are more likely to attract attention. With that said, attention/engagement is an important factor when teaching, not the end goal, and complex ideas can be poorly sub-divided or simplified to fit into prescriptive chunk lengths. Overly bitty videos in training courses are due to people applying a general guideline too rigidly, without thinking about other relevant factors.