问答题 The current limitations of internet learning are actually those of publishing world: who creates a quality product that offers a coherent analysis of the world we live in? The answer has to lie in a group of people, organized in some way both intellectually and technologically. In the past this has usually been through books and articles. Some of the learning successes of the internet illustrate just how this can work in practice. A classic example is Wikipedia, an online encyclopedia created on a largely voluntary basis by contributors. The underlying mechanism of Wikipedia are technological: you can author an article by following hyperlinks—and the instructions. There are intellectual mechanisms built in, looking at the quality of what is submitted. This does not mean that the articles are equally good, or equal in quality to those encyclopedias created by expert, paid authors. However, there is no doubt that the service is a useful tool, and a fascinating demonstration of the power of distributed volunteer networks. A commercial contrast—which is also free—is the very rigorous Wolfram mathematics site, which has definitions and explanations of many key mathematical concepts. For students who use them with the same academic, critical approach they should apply to any source of information, such resources are useful tools, especially when supplemented by those of national organizations such as the Library of Congress, the National Science Foundation and other internationally recognized bodies. There are, of course, commercially available library services that offer electronic versions of printed media, such as journals, for both professional and academic groups, and there is already a fundamental feature of higher and professional education. Regardless of the medium through which they learn, people have to be critical users of information, but at the same time the information has to be appealing and valuable to the learner. (From Making Minds by Pal Kelley. 2008. pp. 127-128)