| 1 | In an election year, this is no certainty. | |
| 2 | In the case of certainty, the choice is unambiguous. | |
| 3 | The one certain thing about the future is that it is far from certain. | |
| 4 | Each of these tasks requires confidence in reporting on evidence that may lack certainty. | |
| 5 | The demand for certainty is one which is natural to man, but is nevertheless an intellectual vice. |