contains({ 1, 2, 3 }, tointeger({}))

Hi [mention:30bb505c1ca4449ca754b36b7a8ed1d7:e9ed411860ed4f2ba0265705b8793d05] ,

When the value is an empty list of the same type, it will return True. Yes, we can find this information in the documentation.

technically every set contains an empty set (in any number).  a little bit like how you can multiply any number by zero and get a valid result (zero).  unintuitive, but still true.