A big problem for people self-learning complex/powerful interfaces is that they often have no way to gauge how long it will take to reach a useful level of prof

A big problem for people self-learning complex/powerful interfaces is that they often have no way to gauge how long it will take to reach a useful level of proficiency. For busy people or for urgent tasks that means allocating time to learn the thing is a risk. The deadline may have passed by the time you figure it out, or you may be interrupted by other tasks and end up cognitively back at square one.