Design a mobile app for pizza food truck that allows customers to:
1. Order and pay online.
2. Notify user when food is ready.
3. Minimize the waiting time.
Waiting in line is a universally despised experience. Understanding the psychology of waiting in line and identify factor that make customers frustrate.
1. Unoccupied time feels longer than occupied time.
2. People want to get started.
3. Anxiety makes waits seem longer.
4. Uncertain waits feel longer than known, finite waits.
5. Unexplained waits feel longer that explained waits