under-used in education, but it is increasingly a feature of the lives of young people. This sensitivity to the difference between virtuality and reality will become an increasingly important life skill, as we begin to merge them, for instance in the remote control of robot welders in pipelines. It's important to know the difference between training (virtual reality) and life, when a mistake can lead to an explosion or an oil leak, which has very real consequences. Lastly, I also have some concerns about the 'open culture' of web 2.0. In general, as readers will know, I am a great supporter of web 2.0 tools in education, and of open access in particular. However, this does not apply to all web 2.0 tools, or all ways in which they are used. Jared Lanier, one of the founders of virtual reality, says: " I know quite a few people ... who are proud to say that they have accumulated thousands of friends on Facebook. Obviously, this statement can only be true if the idea of friendship is reduced. " Also, while in general Lanier supports the use of crowd sourcing and the 'wisdom of the crowd' that underlies moves towards cMOOCs and Siemen's theory of connectivism, he criticizes: ' the odd lack of curiosity about the limits of crowd wisdom. This is an indication of the faith-based motivations behind such schemes. Numerous projects have looked at how to improve specific markets and other crowd wisdom systems, but too few projects have