“Where knowledge has a short half-life, knowledge management is not so much about documenting and protecting ‘what you know’, it is about how fast you can know something new, and how easily you can let go of the old.....那么问题来了,what’s the half-life of knowledge in our area of expertise? How many hours it requires each week to keep up with the state of knowledge in this discipline to stay relevant in our work? And how should we differentiate between effective and non-effective learning?