The underlying assumptions are strong currents that can alter the direction of our journey.
We assume a person doesn't want guidance and that is exactly what is desired. We assume that additional contact would be a bother and yet the other person sees it as a helpful reminder. We think one program is inferior to another because of A, B, and C and our assumption causes us overlook the virtues of D, E, and F.
Pick out an important project and consider your underlying assumptions. They may be leading you onto a sand bar.