Final answer:
In philosophy, empirical evidence is used to test the validity and truth of a proposition, but it doesn't provide certainty. While empirical evidence can support and verify a statement, there are some claims that cannot be empirically proven or disproven.
Step-by-step explanation:
The question is discussing the concept of defining 'necessary' by including empirical evidence. In philosophy, empirical evidence is used to test the validity and truth of a proposition.
However, the use of empirical evidence does not provide certainty, but rather support and verification to a certain degree. While empirical evidence can be valuable in confirming the truth of a statement, it is not always possible to empirically prove or disprove certain claims.