In these two months I usually go home by bus from where I work. As the map shows, there are two bus stops A (route 2) and B (route 6), both of them can bring me home, but they are roughly one block away from each other. Both route 2 and route 6 buses follow the path indicated by the arrow. I change my way of catching bus step by step.

1. just wait at stop A and ignore stop B.

2. wait at stop A, and keep staring the intersection where the buses come from. Once see route 6, run from stop A to stop B and catch it.

3. wait at stop B, keep staring the intersection where the bueses come from. Once see route 2, run from stop A to stop B and catch it.