“…In practice, of course, science museums are generally far from realizing their 'didactic' purposes. Not only do the push-button exhibits generally in use offer rather poor simulations of actual experimental procedures, but it also appears, from our own observations and the study by Boissan and Hitier (1982), that most museum visitors either do not read the accompanying notices, or simply consider them difficult to understand. Visitors tend to 'look at', rather than actually 'see', the exhibits on show.…”