If hope is believing in possibility then the dam offered hope in the 1930s. Hope was needed in these times, since these times were harder than anyone had expected them to be. And maybe that's the thing about hope that makes it something we need. When we are faced with the unexpected, when our expectations are not met, we must believe in the possibility that things will be okay when we are scared or unsure about the future. We must believe in the possibility that although our expectations haven't been met, that things will be okay. Hope keeps us standing, keeps us working, helps us endure. Hope leads us into action to obtain what we need, what we will work for, hone skills for, be patient for whatever it is that will help us get what we believe we need.
Is Need also Desire? How related is Need to Want? The workers building the dam needed and wanted the jobs in the beginning because of the money needed to buy what they desired. However the job paid little, though they supposedly got what they desired, food and shelter. Yet after awhile, their needs so met, they began to want better quality. However, once a need is met, the desire for more begins. Believing in the possibility that what one already has can be more and better is the downside of hope.
The men who designed the dam to be built in Black Canyon had a vision of how it was to be done. They needed it to be built in a way that met this vision. They didn't desire to have a vision, they desired that vision to unfold. They were men whose needs of food and shelter had for the most part always been met, their "more" and "better" wasn't just for immediate living needs. The vision was beyond that immediacy, rather it looked to tomorrow's wealth. Yet even the designers needed hope that it would be a successful project, that the workers would do the work to build the envisioned dam.
As the dam was built ahead of schedule, it was because of every man's hope, a production of belief in possibility.