If one interprets the ‘ecology of technology’ as the study of technology in relation to its environment, there are two important levels at which this study can be made. It is possible to consider the different environments in Europe, Japan and the USA, and look for the different technological influences which accompany them. At a more general level, one can look at those factors which are common to all three environments, and which are associated with generic similarities in the technology (...) of all three areas.The paper considers both aspects as they have been experienced in Europe in some attempts to develop a ‘human-centred technology’. (shrink)