How can Kavanaugh sue? If it’s fake, it’s a crime and district attorney will sue. But how do you prove it’s fake? It might be hard to even sue Swetnick.
Since there is no specific time and place, it would be impossible to prove it did happen or not.
FBI may investigate a guy who admitted he was lying. But if he did not admit, there’s also no proof that he lied.
If there’s a very specific accusation with specific time, place, physical evidence or witness, it would be easier to prove it is true or false. A vague accusation from many years ago is impossible to prove or disprove.
For example, we can accuse every man, for example, you, that he exposed his private part to one female classmate without specific year, date or place decades ago. How do you prove it did not happen?
You can also accuse every woman that she stole another person’s pencil in 1980s, specific year/month/date unknown, place unknown, witnesses have no memory. How can she prove she is innocent? How can she sue you to clear her name?
We have to believe women and believe victims. Believe is not the same as proving what she said actually happened, it just means that we believe she is telling her version of truth honestly without any artificial fabrication. People can have perception or memory issues, you can’t sue a person who may honestly mistake you for someone else, or honestly misremembered a fact.