My friend said many years ago:
Assumptions will kill you!
My friend was right! Be careful about assumptions.
1. Don’t assume I understand what you haven’t explained clearly. So often we assume that someone coming into our system (church, school, university, workplace) knows exactly what to do. So it is Sunday morning and everyone is talking about the great dinner that took place at the church building on Friday evening. You are not sure what they are talking about. You are puzzled. After all, no one mentioned this last Sunday morning. Finally someone says “Oh yes, we do this every year. This is our annual going back to school dinner. No one says much about it. Everyone knows all about it.”