I'm a year late to this discussion prompted by Craig's tweet earlier today. Actually I don't think there is such as thing as just-in-time learning. Just-in-time information or just-in-time knowledge maybe but learning is something deeper and more substantial. KM also struggled with the just-in-time need and never delivered on it's promise of an instant online solution, but the technology is so much better today and I believe that the semantic web combined with mobile devices will really help us deliver information/knowledge at the point of need. Whether that constitutes real learning is another matter.
@CraigTaylor74 @designedlearnin Contextual support always brings back the memories of the Microsoft paper clip which was universally hated not because it worked the way it did but because it so often came up with dumb suggestions. At the time I was an online help developer and the challenge of predicting the various 'contexts' that users might be engaged was extremely difficult. Online help hasn't moved any further forward since and so it has largely been overtaken by help from users on forums such as those provided by Articulate for it's e-learning software. But good though these 'social learning' platforms are they often still fail to correctly identify a particular user's context.