| 1 | But do we know really know ourselves? | |
| 2 | He knows the terrain of this locality like the back of his hand. | |
| 3 | Can you know everything going on in your field or industry? | |
| 4 | Sensors everywhere: Your phone knows a lot about the world around you. | |
| 5 | But don't act as if you know everything about the place. |