From what I've heard this was really sensitive to any changes in environment - temperature, vibration or possibly even air pressure. All of which were likely t

From what I've heard this was really sensitive to any changes in environment - temperature, vibration or possibly even air pressure. All of which were likely to change where you were about to demonstrate your new mainframe to a delegation of important people! :-) IIRC it was even named "the general syndrome" in some places.