As soon as you begin a presentation and you turn out to be wrong (in the case of statistics), or unintelligible (in the case of the Jargon Trap), people begin to mentally step back from you. And if they do that, they have lost the message and you have lost the game.
Usability roughly can be defined as the ease with which a technology can be used, and the study of how different technology designs can either contribute to or prevent errors. In healthcare, this is a big deal because errors can have very serious negative consequences for the patient.
I often use the "I've slept since then" response, but it's still embarrassing and annoying to be that reliant on notes. I've often vented in frustration "Why can't I remove these 80's song lyrics from my childhood and use the space for the stuff I need to remember now?!"
Procaffeinating is a new word to enter in to my vocabulary, but I can tell you that it is a certified truth. In my experience in Academia as a graduate student, in Museums and now in the Corporate World I have learned that one thing is constant across any workplace: Do Not Mess With The ...
A Root Cause Analysis of the problem is so important to prevent these issues from happening again. But unfortunately I've seen a lot of cultural paternalism and blame-the-curators going on in this case. Not only is this not helpful, it will not prevent the next Nightmare in the Museum.