An example may assist the student in considering this option. David Channing had recently graduated from Simon Fraser University in Vancouver, Canada, With a degree in mathematics. Afterwards, for almost a year, he walked the streets, mailed out resumes, and responded to newspaper ads but with no success. During the summers of his undergraduate years he had acted as a tour guide for busloads of tourists who wanted to visit one of the few natural, undeveloped parks in the British Columbia interior.