Hello, lactose intolerant person. Your stomach has repeatedly made you aware that you have a dairy sensitivity via violent diarrhea, yet you never alter your eating habits. In front of you is a delicious salad with a nice shredded cheddar. Next to it is another salad of the same quality, minus the cheese that your stomach so despises. The door will unlock and you will be set free regardless of which one you pick, because I already know which one you are going to pick, and there is no trap I could set that is worse than the fate you have sealed for yourself. Good luck out there soldier.