Last year my senior, Rachaporn Choochuey (http://blogzone-allzone.blogspot.com), was so kind to invite me for a review of graduation projects by her students at Chulalongkorn University in Bangkok. There was a proposal for a Children Learning Centre, which instigated me to talk about main users and sub users. By nature of the program the primary user group is definitely kids but, however, parents who accompany the children to the centre inevitably make up a secondary group of users. Likewise, who knows that streetlights are useful not only to human, especially in winter?
