ConstA selector is a partial function. Outside its domain it answers this rather than a value,
and the condition's answer is then neither true nor false (see Answer): "whole
number between 1 and 5" asked about 2.5 is not "outside 1..5", it is "not a whole number".
not leaves it as it is, and / or read it as false among their children, and every
host reads it as a fail at the edge.
A gate failure: the value is not of the kind the selector reads.