How graphic design can solve problems and save lives

“What problems do graphic designers solve?” That was a recent question that I got from a reader in response to an article here on Graphic Design Blender. He continues his question by adding, “If you’re at an airport will you be more likely to find your terminal if the signs are designed with Helvetica, than if they were designed with Papyrus? Isn’t the only difference that one looks nicer than the other?”