Curators seem to be saying, 'you know as much as us, really'. Another problem with the way new technologies are being used is that their use is often based on the idea of 'learning through doing'. If you're not pressing buttons, you're not engaged. Some interactive galleries seem to hold the assumption that people don't have an attention span of more than 10 seconds - that they learn by moving their body in some way, and that they need lights and noise to get them interested. You can't do that when surrounded with flashing buttons.
Interaction often seems to be treated as an end in itself.
The objective of the exhibit, and its measure of success, is how many visitors come and whether they get involved. If the visitor is pressing a button, if they are involved in an interactive process, it doesn't seem to matter what the process is that they are involved in. I could put utter rubbish up for all anybody would care - the process would still have been a success. In the Museum of London's recreation of a Roman high street, there is a projection of actors dressed up as a Roman crowd walking past the window. Exhibits such as these re-present knowing as experiencing.