| One ethical error can threaten the whole system, because if one is willing to overlook one small wrong, that can allow another, until the whole chain uncouples. |
| When a hydraulic lift is used on the plow, the hydraulic hoses will also usually uncouple automatically when the plow uncouples. |
| But on his way back to the tender he unfortunately uncouples the mortar truck, detaching it from the rest of the train. |
| Further increases in fractionation would seem to require a fundamental change that uncouples fractionation and thickening. |
