There’s an oft-quoted saying that “to a man with a hammer, everything looks like nails.” But what if that man had a hammer, a screwdriver, and a wrench? Might he or she look to see if the flat top had a narrow slit, suggesting the use of a screwdriver? Or perhaps consider the shape of the flat top. Circle? Hexagon? Could a wrench be a more effective tool? And finally, the mere addition of these tools can encourage a better understanding of a problem.