All afternoon, I've been trying to record a video on a subject about which I know lots. I talk for over 30 minutes because there's lots to say.  But reviewing the results, I suspect that's not the best approach. How much information, after all, can anyone take in, particularly during this time of information overload and multitasking? How long can you really listen to someone telling you things? Particularly if it's just a voice recording with slides. How Long Should … [Read more...]