Assertion: inference | /r/HasProperty | valid
Facets:
value: perfectly
type: DEGREE
Source sentences:
text: An inference can be valid even if the parts are false, and can be invalid even if some parts are true.
text: An inference can be valid even if the parts are false, and can be invalid even if some parts are true.
text: But inference is a perfectly legitimate means of obtaining the truth.
text: When a valid argument is used to derive a false conclusion from a false premise, the inference is valid because it follows the form of a correct inference.
text: Inferences based on valid inference rules are also said to be valid.