It is often refreshing to spend time wandering through the fields of the world of mathematics, looking at the scenery and following the laneways to see how they link-up. Most students of mathematics know that the sine of an angle in a triangle is the ratio of the length of the side opposite to the angle to the length of the hypotenuse. This is written as sin(x), where x is the angle. In a number of applications of physics our calculations require us to to divide sin(x) by x. As this occurs frequently, we give this operation the name of sinc(x). However, at one point this function gets into trouble. When x = 0, sinc(0) is 0/0. Is this equal to 1?