A realtor can work two-hundred hours and show sixty houses in a month and not sell a single one. On the other hand, his colleague who works part-time as a realtor for an hour or two every evening. The colleague’s wife was having a baby so he couldn’t work much that month. His evenings were devoted to caring for his children. He showed one house that month and sold it. The commission he earned was sufficient for the entire month. What’s going on?