Heraclitus famously claimed that the ever-present change, known in philosophy as "flux", is the characteristic feature of the world. Education, training, and lifelong learning are not an exemption – they are also in constant flux both through "top-down" policy reforms and "bottom-up" small daily steps to deal with social, demographic, cultural, economic, scientific, environmental, and technological changes that characterise the 21st century. Sometimes these changes take years to happen - som...