I am not a lawyer and I have not stayed in a Holiday Inn Express, but...

There IS civil liability for setting a booby trap. A food cache is NOT a booby trap, but you add a laxative and...

There is an attractive nuisance doctrine that MIGHT protect an allergic child that found unlabled peanut butter.

Sometimes the law is not what we think it should be. Sometimes the law does not produce justice.
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"In theory, theory and practice are the same. In practice, they are not."
Yogi Berra