All three lines would be "insane" if the variables weren't mutated. As in a variable named "three" is insane if it solely contains either of the values 1 or 3.

All three lines would be "insane" if the variables weren't mutated. As in a variable named "three" is insane if it solely contains either of the values 1 or 3. When it contains other values it is still subpar variable naming.