A friend of mine was wondering the advantage over the various operators.  I used the wording short circuits and thus does not eval the portion of the op to the right.

I sent her to this documentation site…

&& and || Operators

  • To avoid exceptions and increase performance by skipping unnecessary comparisons, use && instead of & and || instead of | when you perform comparisons, as shown in the following example.
    C#
                Console.Write("Enter a dividend: ");
            var dividend = Convert.ToInt32(Console.ReadLine());

            Console.Write("Enter a divisor: ");
            var divisor = Convert.ToInt32(Console.ReadLine());

            // If the divisor is 0, the second clause in the following condition
            // causes a run-time error. The && operator short circuits when the
            // first expression is false. That is, it does not evaluate the
            // second expression. The & operator evaluates both, and causes 
            // a run-time error when divisor is 0.
            if ((divisor != 0) && (dividend / divisor > 0))
            {
                Console.WriteLine("Quotient: {0}", dividend / divisor);
            }
            else
            {
                Console.WriteLine("Attempted division by 0 ends up here.");
            }