Following the convention in most other programming languages, logical expressions in MAXScript are short-circuiting or non-strict. This means only enough of the sub-expression is evaluated to determine the overall result:
If the first operand is false in an and expression, the result must be false, therefore, the second operand is not evaluated.
If the first operand is true in an or expression, the result must be true, therefore, the second operand is not evaluated.
This saves execution time and enables useful shorthand notation.