“Can one in this case see from the documents produced that the affidavit must be wrong in claiming that the blanked-out passages do not relate “to any matter in question,” in accordance with the Peruvian Guano test?”
“The Peruvian Guano test must be applied to the information contained in the covered-up part of the document, regardless of its physical or grammatical relationship to the rest. Relevant and irrelevant information may, as in this case, be contained in the same sentence. Provided that the irrelevant part can be covered without destroying the sense of the rest or making it misleading, a party is permitted to do so.”
“The court will not ordinarily disregard the oath of the party that the parts concealed do not relate to the matters in question. In the disputed documents the plaintiffs had blanked out the name, amount or other confidential details of transactions unrelated to the Magnet management buy-out, with which the plaintiffs were concerned. The judge made several references to these details as being “at least potentially relevant.”