1. Once a person's story of harassment is consistent and can be said to be true, then a judge or official can hold that there has been harassment, even if there are no other personal witnesses to the harassment. In essence, a person alleging harassment can be believed even though there is no corroboration. However, this is less likely, than the usual view that the person alleging harassment has not proved their case. Finally, leaving cases open is something which rarely happens.
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