I always remember the famous last words of one of my favorite teachers when I use technology in the classroom--"Technology is great when it works"...

Here's an interesting question--I recently attended a "successful use of powerpoint" talk, and the presenter said not to use words/or many words on the slides. Midway through she commented that she had given her talk in front of a multidisciplinary crowd. The venue allowed attendees to provide anonymous comments, and she received comments from several scientists stating that she didn't have enough text on her slides. Now the question--is this a real disciplinary difference? Do you think that it is appropriate or good to use more text in a powerpoint presentation on a scientific topic than on a humanities topic?