Here is a rant with about not getting accurate information about food allergens followed by a shocking number of comments about people who slip allergens to the allergic because "the allergy is all in their heads". While I'd heard of this happening, it was done by an especially malevolant person--I had no idea it was common behavior.
Aside from going into "I hate people" mode, is there any conceivable way to teach people to ask themselves, "But what if it doesn't work?"?
Lunacon was at a new hotel this year, and as is commonly the case, the management didn't believe anything the committee said about how much the attendees would be using the restaurant, elevators, or anything else. Is this a matter of people just don't believe what they're told and/or that if you have a business, people will tell you how to run it, and the accuracy level isn't especially high? Could it be worthwhile for fans to put together an educational packet for new hotels with pictures of crowded restaurants, numbers from past conventions, and quotes from con-experienced hotel managements?